Same truck here, same year, same engine, extended cab Z71. I haven't worked much on the newer cars - last time I did it for a living was the 1980s :) I may need to do this one day though so it's great having this video. You have a new subscriber!
I have 2004 Chevy Colorado with same motor… getting p0302 and the engine light flashing replaced plugs and coils but still engine light flashing and rough idle. Had my starter replaced few months back! Any Ideas?? Thanks!!
Helpful if you need to know how to change spark plugs but what this doesn't address is the fack that these 5cyl engines have a problem with the head that eather the valve or spring wears Causin it to missfire it is a design flaw with in the engine wont cause it to brake down but will have a check engine light
I recently purchased an 07 colorado 3.7l and its an inline 5 it has 170k miles i done a tune up because it was missing a bit i put some good oil and new plugs in it and didnt change the coils yet, it was never throwing a code could it still be the coils , if so i will replace them tomorrow it runs great but when i come to a complete stop and hit the gas again then let off it idles almost like its gonna die then does just fine any recommendations thanks ahead
Thats a tough one Houston Easton. It is so hard to diagnose the problem without seeing, hearing and experiencing the symptoms. This is just a guess of course, but could the Camshaft Position Actuator Solenoid screens be plugged? This solenoid is designed to precisely control the flow of oil into the camshaft actuator.This changes the rotation of the camshaft to adjust valve timing and valve overlap on the go. If your truck does not respond well when you "kick her down", then it sounds like this part may not be working properly. I have a video on this if you're interested. I changed my solenoid out and I never did have those symptoms you are experiencing. Here is my video link where I change the solenoid: th-cam.com/video/QNvRwgKmNF0/w-d-xo.html It is just a guess though... Good Luck!
Mine is getting a P0300 , random cylinder misfire. I see you mention that one in the description. I already did plugs and PCV hose (it was badly cracked). Guess i'll try the coils next, the plugs all looked fine when I took them out. It has a rough idle but no power loss
Hi Tenny80, It could be a number of things causing that issue. It could be water or debris in the gasoline if you have recently done fuel pump work or have a poor seal around the fuel pump. However, I think you are on the right track. Sometimes when a coil pack begins to fail, it begins to fail only slightly, intermittently, not enough for the Control Module to determine which cylinder it is and therefore you get a random misfire. Once one coil pack starts to fail (wear out), usually the other ones are not far behind. I suggest that you try cylinder #1 first (closest to the fan) ...that seems to be the one that fails first. Good Luck!
@@cantletherdiediy1050 My wife went to start our ‘05 Colorado one day and she said it wouldn’t start. I went out later and it fired right up and ran fine. I replaced the battery about a month ago. I plugged in a diagnostic code reader to check it and it showed code for #1 cylinder coil misfire. I had had all of the spark plugs changed out 3,500 miles ago at a local shop. I ordered a complete set of coil packs today, won’t be in until tomorrow. So I went about getting the truck stripped and ready for the changeout. After I removed the wire connector plugs from all of the coil packs, I found a little pink plastic basket laying on the cover back near the #5 coil pack wires. 🤔 I checked all of the connectors and it was from the #1 coil! 🤬 I cleaned it and then snapped it into place inside the connector. Is there any chance that since this insert was missing from the connector plug, that it would allow an arrant short inside the connector itself?
@@jademonkie Hi Jademonkie, That is hard to say for sure without testing the connection with a multi-meter. I believe that piece helps to keep the wires secure and separate to prevent jiggling and coming too close to each other and arcing / shorting like you suggest. So yeah, I would say it could cause an errand short causing your problem. (you can order that coil connector plug from ACDelco if you want to be sure ACD# PT1496 or GM# 15306431), If the pink piece snapped back in securely, then you may be ok. Its a judgement call. Since you have the coils arriving today. I would put them in your truck. I find when 1 coil goes, the rest are soon to follow. I hope that helps you Jademonkie? Good Luck!
@@cantletherdiediy1050 Thanks for the quick reply. That’s kind of my thought too, if ones acting up, the others aren’t too far behind. And I’d rather do this job once and be done with it, than five different times. Thanks for your DIY Colorado videos. These newer trucks are a PIA to work on. I miss the old days when you could open the hood and actually see an engine that was made of iron and steel, instead of plastic. And you didn’t have to remove ten other parts to replace one.
@@jademonkie You're absolutely right! More and more plastic parts are showing up to keep the vehicles light to get better fuel economy. I don't like that either :)
2006 Chevy Colorado run for a while and then it start driving like it's losing power won't go change the fuel pump change the all the sensors but it's still running the same
First off, thanks for the videos. Sure helps a amateur like me when trying to fix my 2005 colorado. I get a P0352 code from my colorado and figured it would be a bad coil/spark plug but after checking this video and doing a change without any problems I still get the code every now and then. I can reset it with a bluetooth obd2 reader. And my feeling is that it usually indicates at the start of the engine. Once started I have run about 60km without enginelamp indication until next start of the engine.. Any ideas? Thanks from Sweden :)
Hey Peter from Sweden! That's so cool that you come from across the pond from Canada. Well we got to tackle that P0352 code on your Colorado. Generally, when the coil or spark plug goes its a P0302 code indicating a misfire on cylinder 2. A P0352 code indicates an electrical short, corrosion, poor connection issue related to cylinder 2 coil / spark plug. Since you already replaced cylinder 2 coil pack and spark plug, we can focus more on the electrical wire harness and plug connecting to # 2 coil pack. I suggest you closely inspect cylinder 2's coil plug. 1) Is it corroded or missing the purple insulator inside the plug? (you can compare with Cylinder 3's plug) causing the wires to giggle, touch & short out on occasion intermittently triggering the P0352 but not often enough to cause misfire? 2) Is there an exposed area on Cylinder 2's wiring harness causing a short against the other wires or other metal engine parts causing a short to ground? 3) Could it be a broken Cylinder # 2 wire inside the rubber insulation so that it looks good but is broken internally? You may be able to feel for this break by gently pulling on every section of the wire to feel for a weak section indicating a break. ( or use a multimeter to test wire conductivity) The good news is you can purchase the wire and plug from ACDelco (or get a used one from an auto salvage dealer) ACDelco will send you the new plug with 12 inches of wire and 3 but end connectors to replace that wire and plug. ACDelco part # PT1496 and GM part # 15306431. I hope that helps Peter. Anyone else have this P0352 code & issue? Cheers!
@@cantletherdiediy1050 Thanks! Took some time til I could check it, could not see anything that looked broken or exposed wiring. But perhaps it could be worth getting a new plug and see if it helps. And also open upp further from the plug along the wiring and see if anthing looks bad. Or is it possible to measure those cables some how?
Hey I have a misfired in cylinder 1 , changed coils and spark but still same , somebody told me to do a leakdown test , do you think that the head valve is bad ? the engine turns only problem is that run rough .
Cylinder 1 is the hardest cylinder to get the coil pack boot perfectly installed over the spark plug because there is a wiring harness in the way. Try removing the coil pack and re-installing it properly over the spark plug. It is an easy mistake to make and it would cause the misfire in cylinder 1.
05 Colorado extended cab… Random p0301 code. Erase the code and the truck idles rough… and may or may not throw the code but truck still idles rough.. eventually it will throw the code but doesn’t save the code… (on my scanner) After replacing coil pack on cylinder one, the truck still idles rough. And gets worse with the air box flex tube removed. So bad that if you rev up the engine it stalls immediately… I’ve replaced all cam shift sensors from previous problem…(at time it was a “cam shaft actuator solenoid”) I’m concerned this may be something more serious… Summary May or may not throw code… Cylinder one pack changed… Idles rough shakes and will stall if air box “flex tube” is removed…(air not filtered) I’ve ordered another “camshaft actuator solenoid” but have a feeling this is the problem… I could swap out spark plugs and see if it is that… Any suggestions is greatly appreciated
@@cantletherdiediy1050 Very relieved… this is my son’s truck, who is 18 and driving back and forth to colle- well everywhere… I did however, spend $85.00 on unnecessary parts (set of coil packs and a actuator solenoid)… but I hope my mistake helps others…. So guys, change your spark plugs when you change the coil packs. I had changed the coil packs from a earlier fix and should have changed the spark plugs then… Thanks for your video…. It helped me brainstorm my problem… and you are correct “YOU GOT THIS!”
I have the same problem but mine is cylinder 5 I changed the plugs and coil still throwing the misfire code I tested the coil it is working properly now I’m stumped please help
Yeah, it did come out of nowhere. The coil may have failed. A P0302 is better than a P0300. Your P0302 has identified a misfire in cylinder 2 whereas P0300 indicates a general misfire but can not determine which cylinder. Check for a loose connection to cylinder 2 spark plug coil. You can swop Cylinder 2 coil with cylinder 3 and see if your code moves to cylinder 3.(P0303). I had to change one coil and then a month later another one went so I just changed all 5 coils. Good Luck!
@@cantletherdiediy1050 we did swap the coils for 2 and 3. I went for a little drive after that and so far the code didn't come back but I'm sure it will. I looked up the coils at the parts store and the ac Delco one was distributorless and the others said something else. How can I tell for sure which one I need because the ac Delco is $152 and the others are around $70 if I remember correctly
@@tamipotirala6973 Hi Tami, I put an amazon link in the video description where the AC delco coil is $99.00. Amazon has a confirmed fit function as well which works quite well to make sure the prt fits your vehicle. You just have to types in your make and model of truck. Our truck does not have a distributor, these coils perform that role. AC Delco coil illustrated in the link that I provide is the original equipment manufactured part. In some situations you can go with the most affordable part but when it comes to coils, I would pay a bit more for AC Delco coil and avoid those cheaper after market parts. It worked for my truck and is still working. (426,000 kms) I hope that helps Tami.
@@cantletherdiediy1050 thank you I got it replaced by myself thanks to your video. I'm not mechanical at all but it was pretty east even I could do it. I wish I had a video to show how to replace the headlight switch on the dash. Mine was intermittently making my dashlights not work which really sucked at night. Luckily the dealer didn't charge too much to fix it for me.
@@tamipotirala6973 I'm glad the new coil fixed your error code and rough idle. Perhaps the switch only needed cleaning the contacts? I have never had that issue but I can not imagine that switch would ever wear out. I never use mine. I just leave it on the brightness that I like and forget about it :) If you have an idea for a video, don't hesitate to ask Tami. You're a Better Mechanic than You Think... Congrats!
Any codes? What has been done so far? Is the cylinder 1 coil installed correctly? Due to the wiring harness partially obstructing the installation of that #1 coil, many people have installed that coil with the spark plug outside of the boot of the coil. Try removing coil 1, switching it with another coil, changing the spark plugs while your at it, and carefully re-installing the coils paying particular attention to inserting it with the boot going over the spark plug. I hope that helps.
@@cantletherdiediy1050 Thank you for replying, O just recently put the scanner and I got p0014 specifying a exhaust b camshaft sensor, I just want to know if you had had any encounters with this code? If so how did you fixed it?
@@robertcampos4204 Yes, now we are getting somewhere. P0014 code identifies the cam shaft position sensor. This can be the source of shaking and rough idle. You can replace the cam shaft position sensor relatively easy. This sensor has three small screens on it and over time one or more of these screens can come off and circulate around in your oil. You should replace this part immediately and examine the old sensor for missing screens. If one or more screens are missing, don't panic, just replace your oil and oil filter immediately. You Got this Robert!
it is located on the passenger side of your engine, sticking into the engine above the radiator hose. It has 1 electrical connection plug attached to it that you need to remove.
@@cantletherdiediy1050 Thank for helping, I just replaced it with a new Camshaft sensor and my Canyon is still doing vibration misfiring symptoms, I wanted to ask if you ever had issues with you PCV valve? Is so what were the symptoms you had with that?
Hello I'm getting codes p0302 cylinder 2 misfire & P0506 idle speed to low. I have an 05 chevy colorado same engine. It runs rough & shifts late. At first I noticed that when I'm cruising at a steady speed that the rpms would jump up & down/Rev & the truck would jerk a lil bit even in cruise control, now as soon as I get to about 30mph the rpms jumps up revs hard then when I ease of the pedal it shift to the next gear. What do you think the issue could be?
Hey Freshgear687, Has there been any work done on the truck recently. What have you tried so far? Did both codes illuminate at the same time or did you get one and then the second one showed up a little later?
@@cantletherdiediy1050 haven't had any work done yet in a while. The truck was actually sitting for a while before I start driving it again. Both codes popped up at the same time. I thought it could be a shift solenoid but I didn't get any codes on it.
@@freshgear687 Yeah, it is really hard to help you out without seeing, hearing, feeling the symptoms like rough idle, etc.Sitting for a while may give a rodent an opportunity to build a nest and cause problems. I would focus on the rough idle...that may be causing the P0506 code. Unfortunately, there are a lot of things that can cause rough idle. I would start with the cheapest repair first. Check that there isn't a mouse or squirrel's nest around the air filter or mass flow air sensor. I would check the throttle body also for obstructions as I removed the fresh air resonator (box on top) so that I could replace the cylinder 2 spark plug and cylinder 2 coil pack. Cylinder 2 is not working properly...I would replace the spark plug and coil pack. If finances are a problem, you could also swop cylinder 2 coil pack with cylinder 3, clear the codes, and see if the code switches to P0303 indicating a misfire on cylinder 3, proving the culprit is the coil pack. Then you know that coil pack is Destined for the Dump!! You Got This Freshgear687!
hello!! I am currently facing the same problem with my 2004 chevy Colorado, I have replaced the spark plugs and coils.. but it still giving me cylinder 1 misfire.. I don't know what other things to do, is there any other things that I can do to not let my chevy die? LOL
Hi Cameela, Are you getting a check engine light? Are you getting a code for misfire on cylinder 1? Any other codes? What work has recently been done? The more info you provide the better I will be able to help Perhaps you should begin with the easiest repairs possible to rule out the simple fixes that can often be over looked and then move on from there. 1) Is the connection to Coil # 1 properly install? Perhaps you should disconnect and reconnect it to be sure. 2) Remove coil # 1 and swap it with coil # 2. Often , because the wiring harness is in the way, coil # 1 may not get installed properly. Since it is a little difficult to put coil #1 on without loosening the wiring harness (pulling it out of the way a bit) coil # 1 can be install with the spark plug outside of the rubber boot. If so, coil # 1 would appear to be install properly but would cause a cylinder 1 misfire. While you are at it, you might as well swap coil # 1 with coil# 2 to rule out a defective coil. Those are two possible repairs to your problem that would not cost you anything. I would try those first before moving on to more challenging / costly repairs. I hope that helps Cameela. Cheers!
Hi Sir! thank you for the reply back and yes I am getting a check engine light and its blinking. before I took the coil 1 off and before I shoot some penetrating oil around the spark plugs (coz they are so tight to remove) it was not blinking, but when I started it, that's when the check engine was blinking and my Chevy shaking. is it possible that I have damaged it coz I put too much penetrating oil around the old spark plugs? I am getting a PO301 code and its always the cylinder 1,. even after I changed all the spark plugs and changed all the coil. those are the only two things I have worked on, I didn't try to do anything coz I don't know what else. I also have moved the coil 1 to coil 3 and it still gave me a misfire on cylinder 1. I have removed, checked and put the plugs and coils back on a few times just to make sure but still the same, also the WIRING HARNESS is so hard to remove or loosen up, I may not be putting the coils properly coz its hard to squeeze the coil back in, is there a way I can loosen it up? it has a flat plastic thing on it that's stopping me from at least give me space to push the coil in.. im just afraid to do anything now and breaking anymore.. thank you for the time on replying Sir. I appreciate the advice, help anything as im only doing this myself. no experience either other than simple repairs or replacement with my own Chevy..
Cameeela CabeYo I think you are doing Great Cameeela. You are better than you think!. You can unscrew those flat plastic clips off . Or break them off and later use zip ties to tighten up the wiring harness. We need to be sure that coil is installed properly. You are doing great... don’t give up...You Got This Cameeela!
@@cantletherdiediy1050 OMG!!!!! I just took those flat plastic clips off and got the coils back in there properly.. AND ITS NOW WORKING!!!! my Chevy is not shaking anymore and it doesn't show any codes, or the check engine light blinking. test drive it and its driving good!! omg!!!! thank you sir, I cant thank you enough!! I was afraid of breaking the wirings in but I didn't and I can drive my truck again..
I have had a random misfire for years and have checked changed compression tested yet still. Now I’m getting the blinking check engine light and the truck has no power under load but if I put the clutch in it revs up just fine. Any time ideas sir?
What are your codes? Do you have a scanner that can read live data? A misfire isn't always ignition related, it could be fuel related too. I suggest reading live data while driving so you can monitor what each sensor is telling you.
@@NikkFlo those are all (BCM) Body Control Module codes. Are you sure they are "B" codes and not "P" codes? The BCM is located under the dash behind the passenger side kick panel. The panel simply pulls off. I would inspect the connections, but you should be getting "P" codes for engine misfires
@@nsmturbo5902 I have the p0300 along with those. My ac will at times stop working and it’s due to the grounds. I have cleaned the grounds and checked points. Ac works as soon as I move the ground splice pack and clean it. The truck does burn oil too. About 1 qt every 1500 miles yet the plugs are clean. Could be the valve seat but wouldn’t a plug be dirty due to it? Thanks for the reply’s and help.
That intro you improvised, really cracked me up. That was really funny. Anyways good informative video. Nice work.
I'm glad you liked it George, it was fun to film.Thanks for the watching and subscribing
Cheers!
Same truck here, same year, same engine, extended cab Z71. I haven't worked much on the newer cars - last time I did it for a living was the 1980s :) I may need to do this one day though so it's great having this video. You have a new subscriber!
Excellent!
I have 2004 Chevy Colorado with same motor… getting p0302 and the engine light flashing replaced plugs and coils but still engine light flashing and rough idle. Had my starter replaced few months back! Any Ideas?? Thanks!!
Helpful if you need to know how to change spark plugs but what this doesn't address is the fack that these 5cyl engines have a problem with the head that eather the valve or spring wears Causin it to missfire it is a design flaw with in the engine wont cause it to brake down but will have a check engine light
Thanks for the info it really helped.
I recently purchased an 07 colorado 3.7l and its an inline 5 it has 170k miles i done a tune up because it was missing a bit i put some good oil and new plugs in it and didnt change the coils yet, it was never throwing a code could it still be the coils , if so i will replace them tomorrow it runs great but when i come to a complete stop and hit the gas again then let off it idles almost like its gonna die then does just fine any recommendations thanks ahead
Thats a tough one Houston Easton. It is so hard to diagnose the problem without seeing, hearing and experiencing the symptoms. This is just a guess of course, but could the Camshaft Position Actuator Solenoid screens be plugged? This solenoid is designed to precisely control the flow of oil into the camshaft actuator.This changes the rotation of the camshaft to adjust valve timing and valve overlap on the go. If your truck does not respond well when you "kick her down", then it sounds like this part may not be working properly. I have a video on this if you're interested. I changed my solenoid out and I never did have those symptoms you are experiencing. Here is my video link where I change the solenoid: th-cam.com/video/QNvRwgKmNF0/w-d-xo.html
It is just a guess though... Good Luck!
Mine is getting a P0300 , random cylinder misfire. I see you mention that one in the description. I already did plugs and PCV hose (it was badly cracked). Guess i'll try the coils next, the plugs all looked fine when I took them out. It has a rough idle but no power loss
Hi Tenny80, It could be a number of things causing that issue. It could be water or debris in the gasoline if you have recently done fuel pump work or have a poor seal around the fuel pump. However, I think you are on the right track. Sometimes when a coil pack begins to fail, it begins to fail only slightly, intermittently, not enough for the Control Module to determine which cylinder it is and therefore you get a random misfire. Once one coil pack starts to fail (wear out), usually the other ones are not far behind. I suggest that you try cylinder #1 first (closest to the fan) ...that seems to be the one that fails first. Good Luck!
@@cantletherdiediy1050
My wife went to start our ‘05 Colorado one day and she said it wouldn’t start. I went out later and it fired right up and ran fine. I replaced the battery about a month ago.
I plugged in a diagnostic code reader to check it and it showed code for #1 cylinder coil misfire.
I had had all of the spark plugs changed out 3,500 miles ago at a local shop.
I ordered a complete set of coil packs today, won’t be in until tomorrow.
So I went about getting the truck stripped and ready for the changeout.
After I removed the wire connector plugs from all of the coil packs, I found a little pink plastic basket laying on the cover back near the #5 coil pack wires. 🤔
I checked all of the connectors and it was from the #1 coil! 🤬
I cleaned it and then snapped it into place inside the connector.
Is there any chance that since this insert was missing from the connector plug, that it would allow an arrant short inside the connector itself?
@@jademonkie Hi Jademonkie,
That is hard to say for sure without testing the connection with a multi-meter. I believe that piece helps to keep the wires secure and separate to prevent jiggling and coming too close to each other and arcing / shorting like you suggest. So yeah, I would say it could cause an errand short causing your problem. (you can order that coil connector plug from ACDelco if you want to be sure ACD# PT1496 or GM# 15306431), If the pink piece snapped back in securely, then you may be ok. Its a judgement call.
Since you have the coils arriving today. I would put them in your truck. I find when 1 coil goes, the rest are soon to follow.
I hope that helps you Jademonkie? Good Luck!
@@cantletherdiediy1050
Thanks for the quick reply.
That’s kind of my thought too, if ones acting up, the others aren’t too far behind. And I’d rather do this job once and be done with it, than five different times.
Thanks for your DIY Colorado videos. These newer trucks are a PIA to work on. I miss the old days when you could open the hood and actually see an engine that was made of iron and steel, instead of plastic. And you didn’t have to remove ten other parts to replace one.
@@jademonkie You're absolutely right! More and more plastic parts are showing up to keep the vehicles light to get better fuel economy. I don't like that either :)
Iam having 90lb pressure in the #1 cylinder
2006 Chevy Colorado run for a while and then it start driving like it's losing power won't go change the fuel pump change the all the sensors but it's still running the same
First off, thanks for the videos. Sure helps a amateur like me when trying to fix my 2005 colorado. I get a P0352 code from my colorado and figured it would be a bad coil/spark plug but after checking this video and doing a change without any problems I still get the code every now and then. I can reset it with a bluetooth obd2 reader. And my feeling is that it usually indicates at the start of the engine. Once started I have run about 60km without enginelamp indication until next start of the engine.. Any ideas?
Thanks from Sweden :)
Hey Peter from Sweden! That's so cool that you come from across the pond from Canada. Well we got to tackle that P0352 code on your Colorado. Generally, when the coil or spark plug goes its a P0302 code indicating a misfire on cylinder 2.
A P0352 code indicates an electrical short, corrosion, poor connection issue related to cylinder 2 coil / spark plug. Since you already replaced cylinder 2 coil pack and spark plug, we can focus more on the electrical wire harness and plug connecting to # 2 coil pack. I suggest you closely inspect cylinder 2's coil plug. 1) Is it corroded or missing the purple insulator inside the plug? (you can compare with Cylinder 3's plug) causing the wires to giggle, touch & short out on occasion intermittently triggering the P0352 but not often enough to cause misfire? 2) Is there an exposed area on Cylinder 2's wiring harness causing a short against the other wires or other metal engine parts causing a short to ground?
3) Could it be a broken Cylinder # 2 wire inside the rubber insulation so that it looks good but is broken internally? You may be able to feel for this break by gently pulling on every section of the wire to feel for a weak section indicating a break. ( or use a multimeter to test wire conductivity)
The good news is you can purchase the wire and plug from ACDelco (or get a used one from an auto salvage dealer) ACDelco will send you the new plug with 12 inches of wire and 3 but end connectors to replace that wire and plug. ACDelco part # PT1496 and GM part # 15306431. I hope that helps Peter. Anyone else have this P0352 code & issue? Cheers!
That's either ACDelco # PT1496 or GM# 15306431 not both :)
@@cantletherdiediy1050 Thanks! Took some time til I could check it, could not see anything that looked broken or exposed wiring. But perhaps it could be worth getting a new plug and see if it helps. And also open upp further from the plug along the wiring and see if anthing looks bad. Or is it possible to measure those cables some how?
@@peterasp5855 when in doubt just replace the plug
do you have to gap the spark plugs
No, I did not gap the spark plugs.
I’ve got a truck exactly like this I change the variable timing solenoid and can’t seem to get the check engine light to go out
Can you hook a code reader (code scanner) to identify what is causing the check engine light to come on? Sometimes part retailers will do it for free.
Hey I have a misfired in cylinder 1 , changed coils and spark but still same , somebody told me to do a leakdown test , do you think that the head valve is bad ? the engine turns only problem is that run rough .
Cylinder 1 is the hardest cylinder to get the coil pack boot perfectly installed over the spark plug because there is a wiring harness in the way. Try removing the coil pack and re-installing it properly over the spark plug. It is an easy mistake to make and it would cause the misfire in cylinder 1.
05 Colorado extended cab…
Random p0301 code. Erase the code and the truck idles rough… and may or may not throw the code but truck still idles rough.. eventually it will throw the code but doesn’t save the code… (on my scanner)
After replacing coil pack on cylinder one, the truck still idles rough. And gets worse with the air box flex tube removed. So bad that if you rev up the engine it stalls immediately…
I’ve replaced all cam shift sensors from previous problem…(at time it was a “cam shaft actuator solenoid”) I’m concerned this may be something more serious…
Summary
May or may not throw code…
Cylinder one pack changed…
Idles rough shakes and will stall if air box “flex tube” is removed…(air not filtered)
I’ve ordered another “camshaft actuator solenoid” but have a feeling this is the problem…
I could swap out spark plugs and see if it is that…
Any suggestions is greatly appreciated
UPDATE….
It was the plug…. Although rare, I guess plugs can go out in a everyday car… does not have to be a high horsepower engine../
@@Greatnate30447 Excellent! Thanks so much for letting us know what your fix was. I bet you're relieved to have that fixed Cheers!
@@cantletherdiediy1050 Very relieved… this is my son’s truck, who is 18 and driving back and forth to colle- well everywhere… I did however, spend $85.00 on unnecessary parts (set of coil packs and a actuator solenoid)… but I hope my mistake helps others…. So guys, change your spark plugs when you change the coil packs. I had changed the coil packs from a earlier fix and should have changed the spark plugs then…
Thanks for your video…. It helped me brainstorm my problem… and you are correct “YOU GOT THIS!”
I have the same problem but mine is cylinder 5 I changed the plugs and coil still throwing the misfire code I tested the coil it is working properly now I’m stumped please help
did that code come out of nowhere because mine did p0302
Yeah, it did come out of nowhere. The coil may have failed. A P0302 is better than a P0300. Your P0302 has identified a misfire in cylinder 2 whereas P0300 indicates a general misfire but can not determine which cylinder. Check for a loose connection to cylinder 2 spark plug coil. You can swop Cylinder 2 coil with cylinder 3 and see if your code moves to cylinder 3.(P0303). I had to change one coil and then a month later another one went so I just changed all 5 coils. Good Luck!
@@cantletherdiediy1050 we did swap the coils for 2 and 3. I went for a little drive after that and so far the code didn't come back but I'm sure it will. I looked up the coils at the parts store and the ac Delco one was distributorless and the others said something else. How can I tell for sure which one I need because the ac Delco is $152 and the others are around $70 if I remember correctly
@@tamipotirala6973 Hi Tami, I put an amazon link in the video description where the AC delco coil is $99.00. Amazon has a confirmed fit function as well which works quite well to make sure the prt fits your vehicle. You just have to types in your make and model of truck. Our truck does not have a distributor, these coils perform that role. AC Delco coil illustrated in the link that I provide is the original equipment manufactured part. In some situations you can go with the most affordable part but when it comes to coils, I would pay a bit more for AC Delco coil and avoid those cheaper after market parts. It worked for my truck and is still working. (426,000 kms) I hope that helps Tami.
@@cantletherdiediy1050 thank you I got it replaced by myself thanks to your video. I'm not mechanical at all but it was pretty east even I could do it. I wish I had a video to show how to replace the headlight switch on the dash. Mine was intermittently making my dashlights not work which really sucked at night. Luckily the dealer didn't charge too much to fix it for me.
@@tamipotirala6973 I'm glad the new coil fixed your error code and rough idle. Perhaps the switch only needed cleaning the contacts? I have never had that issue but I can not imagine that switch would ever wear out. I never use mine. I just leave it on the brightness that I like and forget about it :) If you have an idea for a video, don't hesitate to ask Tami. You're a Better Mechanic than You Think... Congrats!
I’ve been having rough idle too and replaced throttle body and cleaned my mas air flow sensor and still can’t fix the problem
Any codes? What has been done so far? Is the cylinder 1 coil installed correctly? Due to the wiring harness partially obstructing the installation of that #1 coil, many people have installed that coil with the spark plug outside of the boot of the coil. Try removing coil 1, switching it with another coil, changing the spark plugs while your at it, and carefully re-installing the coils paying particular attention to inserting it with the boot going over the spark plug. I hope that helps.
Was your engine shaking and vibrating alot with this issue?
Yes, it was shaking quite a bit with power loss.
@@cantletherdiediy1050 Thank you for replying, O just recently put the scanner and I got p0014 specifying a exhaust b camshaft sensor, I just want to know if you had had any encounters with this code? If so how did you fixed it?
@@robertcampos4204 Yes, now we are getting somewhere. P0014 code identifies the cam shaft position sensor. This can be the source of shaking and rough idle. You can replace the cam shaft position sensor relatively easy. This sensor has three small screens on it and over time one or more of these screens can come off and circulate around in your oil. You should replace this part immediately and examine the old sensor for missing screens. If one or more screens are missing, don't panic, just replace your oil and oil filter immediately. You Got this Robert!
it is located on the passenger side of your engine, sticking into the engine above the radiator hose. It has 1 electrical connection plug attached to it that you need to remove.
@@cantletherdiediy1050 Thank for helping, I just replaced it with a new Camshaft sensor and my Canyon is still doing vibration misfiring symptoms, I wanted to ask if you ever had issues with you PCV valve? Is so what were the symptoms you had with that?
Hello I'm getting codes p0302 cylinder 2 misfire & P0506 idle speed to low. I have an 05 chevy colorado same engine. It runs rough & shifts late. At first I noticed that when I'm cruising at a steady speed that the rpms would jump up & down/Rev & the truck would jerk a lil bit even in cruise control, now as soon as I get to about 30mph the rpms jumps up revs hard then when I ease of the pedal it shift to the next gear. What do you think the issue could be?
Hey Freshgear687, Has there been any work done on the truck recently. What have you tried so far? Did both codes illuminate at the same time or did you get one and then the second one showed up a little later?
@@cantletherdiediy1050 haven't had any work done yet in a while. The truck was actually sitting for a while before I start driving it again. Both codes popped up at the same time. I thought it could be a shift solenoid but I didn't get any codes on it.
@@freshgear687 Yeah, it is really hard to help you out without seeing, hearing, feeling the symptoms like rough idle, etc.Sitting for a while may give a rodent an opportunity to build a nest and cause problems.
I would focus on the rough idle...that may be causing the P0506 code. Unfortunately, there are a lot of things that can cause rough idle. I would start with the cheapest repair first. Check that there isn't a mouse or squirrel's nest around the air filter or mass flow air sensor. I would check the throttle body also for obstructions as I removed the fresh air resonator (box on top) so that I could replace the cylinder 2 spark plug and cylinder 2 coil pack. Cylinder 2 is not working properly...I would replace the spark plug and coil pack. If finances are a problem, you could also swop cylinder 2 coil pack with cylinder 3, clear the codes, and see if the code switches to P0303 indicating a misfire on cylinder 3, proving the culprit is the coil pack. Then you know that coil pack is Destined for the Dump!! You Got This Freshgear687!
That spark plug alone cost you around $7 to $10.00, right?
Yeah, that sounds about right Julio... $7-$10 bucks
hello!! I am currently facing the same problem with my 2004 chevy Colorado, I have replaced the spark plugs and coils.. but it still giving me cylinder 1 misfire.. I don't know what other things to do, is there any other things that I can do to not let my chevy die? LOL
Hi Cameela,
Are you getting a check engine light? Are you getting a code for misfire on cylinder 1? Any other codes? What work has recently been done?
The more info you provide the better I will be able to help
Perhaps you should begin with the easiest repairs possible to rule out the simple fixes that can often be over looked and then move on from there.
1) Is the connection to Coil # 1 properly install? Perhaps you should disconnect and reconnect it to be sure.
2) Remove coil # 1 and swap it with coil # 2. Often , because the wiring harness is in the way, coil # 1 may not get installed properly. Since it is a little difficult to put coil #1 on without loosening the wiring harness (pulling it out of the way a bit) coil # 1 can be install with the spark plug outside of the rubber boot. If so, coil # 1 would appear to be install properly but would cause a cylinder 1 misfire. While you are at it, you might as well swap coil # 1 with coil# 2 to rule out a defective coil.
Those are two possible repairs to your problem that would not cost you anything. I would try those first before moving on to more challenging / costly repairs. I hope that helps Cameela. Cheers!
Hi Sir! thank you for the reply back and yes I am getting a check engine light and its blinking. before I took the coil 1 off and before I shoot some penetrating oil around the spark plugs (coz they are so tight to remove) it was not blinking, but when I started it, that's when the check engine was blinking and my Chevy shaking. is it possible that I have damaged it coz I put too much penetrating oil around the old spark plugs?
I am getting a PO301 code and its always the cylinder 1,. even after I changed all the spark plugs and changed all the coil. those are the only two things I have worked on, I didn't try to do anything coz I don't know what else. I also have moved the coil 1 to coil 3 and it still gave me a misfire on cylinder 1.
I have removed, checked and put the plugs and coils back on a few times just to make sure but still the same, also the WIRING HARNESS is so hard to remove or loosen up, I may not be putting the coils properly coz its hard to squeeze the coil back in, is there a way I can loosen it up? it has a flat plastic thing on it that's stopping me from at least give me space to push the coil in.. im just afraid to do anything now and breaking anymore..
thank you for the time on replying Sir. I appreciate the advice, help anything as im only doing this myself. no experience either other than simple repairs or replacement with my own Chevy..
Cameeela CabeYo
I think you are doing Great Cameeela. You are better than you think!. You can unscrew those flat plastic clips off . Or break them off and later use zip ties to tighten up the wiring harness. We need to be sure that coil is installed properly. You are doing great... don’t give up...You Got This Cameeela!
@@cantletherdiediy1050 OMG!!!!! I just took those flat plastic clips off and got the coils back in there properly.. AND ITS NOW WORKING!!!! my Chevy is not shaking anymore and it doesn't show any codes, or the check engine light blinking. test drive it and its driving good!! omg!!!! thank you sir, I cant thank you enough!! I was afraid of breaking the wirings in but I didn't and I can drive my truck again..
That's Great News! I'm glad it all worked out for you. Enjoy the drive with your new plugs and coils!
Cheers!
I have had a random misfire for years and have checked changed compression tested yet still. Now I’m getting the blinking check engine light and the truck has no power under load but if I put the clutch in it revs up just fine. Any time ideas sir?
What are your codes? Do you have a scanner that can read live data? A misfire isn't always ignition related, it could be fuel related too. I suggest reading live data while driving so you can monitor what each sensor is telling you.
@@nsmturbo5902 the short fuel curve would drop drastically then spikes back up. I use a BlueDriver scanner
@@nsmturbo5902 also b1383 b1420 b1477 b0528 have gone off randomly as well lately.
@@NikkFlo those are all (BCM) Body Control Module codes. Are you sure they are "B" codes and not "P" codes? The BCM is located under the dash behind the passenger side kick panel. The panel simply pulls off. I would inspect the connections, but you should be getting "P" codes for engine misfires
@@nsmturbo5902 I have the p0300 along with those. My ac will at times stop working and it’s due to the grounds. I have cleaned the grounds and checked points. Ac works as soon as I move the ground splice pack and clean it. The truck does burn oil too. About 1 qt every 1500 miles yet the plugs are clean. Could be the valve seat but wouldn’t a plug be dirty due to it? Thanks for the reply’s and help.
Idle speed low an engine misfire don't say one two three four five. Evap vent s o l e n o i d valve control system