Diagnose and Fix Engine Misfires - Flashing Check Engine Light , Rough Running Idle , Low Power
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- เผยแพร่เมื่อ 4 ต.ค. 2024
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Is your car idling rough or experiencing loss of power? Are you getting worse gas milage or having a harder time getting up hills? In this video we take you step by step through the process of diagnosing and fixing common engine misfire issues.
For step #4 please watch this video: • Replace Ignition Coils...
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If only all car youtube videos were as good as this! Simple and to the point.
I have a 2006 chevy Impala and it is doing funky things. I recently had my oil leak fixed and IT'S LEAKING AGAIN!!!!!!!!!!!!! After 1 month of going good. Then, while idling it idles rough and sometimes cuts out while driving. Not cutting out as in the engine shuts down. Just cuts out very lightly where it causes a revving in and out feeling. Also does this while on cruise control. Going to parts store tomorrow to have codes read.
I do a high mileage oil change every 3 months, meaning before I'm suppose to.
I also do a transmission flush once each year.
I recently changed the cabin air filter, engine, spark plugs and wires myself a couple weeks ago.
I'm a female and trying to save money. 🤷♀️😂😬
Nice! Changed the plugs, coils, disconnected the battery, so far so good. Now its chugging funny but its one less problem.
Boo!
Have the same problem we’re u ever able to fiz it?
A fast way for checking ignition coils is to pull them (one at a time) while the engine is running and see if the engine changes sound or starts to misfire (don't do this for long though) but it's a quick way to see if a coil is working (be careful because a good coil will continue to send a spark so keep it away from anything flammable and really you only need ot pull them up slightly -- enough so they can't fire the spark plug or transfer the spark to the plug). If you suspect one is bad, you can sometimes swap them and see if the misfire follows the coil or changes cylinders when coils are moved around.
So what if you pull them out a little and, it still runs as if you hadn't done it ? How do you diagnose that issue ? Inquiring for myself I have this issue right now ?
If nothing changes when pulled then that cylinder isn’t firing. Could be bad spark plug or coil. I’d start with a spark plug as it’s much cheaper to replace.
I got a 2008 Nissan Altima and This Was The Exact Problem that was Wrong with my Car My Engine Light was Flashing On and Off , & I did think it was something major but I see it’s nothing but the SPARK PLUGS , Thanks For The VIDEO
Try this cheap fix first. Pop out the mass air flow sensor and spray it down with MAF cleaner. Let it dry. Pop it back in. $10 or $12 at any parts store. You’re welcome.
I tried this. I think My MAF might be bad. Cleaned it once already
I'm having a problem now where I warm my truck up in the morning the truck and go to leave after its been idling, it's idling rough and the check engine light is flashing. Once I turn it off and back on, and drive, it's ok. Until I idle it again. Any ideas?
@@TrustGodFearNothing if the check engine light is flashing you should take it to a mechanic immediately as it usually means you have a serious problem
@@TrustGodFearNothing my Dodge Dakota had revving issues, stalling, rough idle, and more. Try cleaning the Mass Airflow sensor or MAF. Plenty of videos showing how to clean it. If that doesn't work go buy a new TPS or Throttle position sensor. Get one with a lifetime warranty such as Standard. Also, undo the plastic hose from the air filter box to the Throttle body. Where the big hose connects to the throttle body look into the opening and see how dirty it looks. If its pretty filthy, look up videos on how to clean your vehicle's throttle body. Even if it means removing it which may make it easier to clean it. After its clean and reinstalled, air filter box hose is hooked back up to the throttle body, see how the vehicle runs. If not much better, you may need to replace the MAF, MAP and/or IAC sensors. But first, get an empty spray bottle and mix water and dish soap. With the vehicle running spray around where rubber hoses connect to the engine and whatnot. If any bubbles, you have a leak. Which hoses should be your first inspection but you're getting somewhere without paying ridiculous amounts from certain "mechanics". There are way more things to look for. Use the internet to educate yourself. If you're at your wits end then find a trustworthy mechanic. Word of mouth is the best, NOT BECAUSE THEY ARE SOMEONE'S FRIEND OR RELATIVE LOL.
@@Roller76 that blinking means multiple misfires most likely. My car does it but I’m just struggling to find out why
THANKS SO MUCH, I CHANGED ALL PLUGS AND EVEN ONE COIL AND STILL IDLES ROUGH. I ORDERED A SET OF COILS FROM AMAZON AND I PRAY THIS IS IT AS IT'S NEVER RUINS AS WELL AS IT DID ON DAY ONE!!
Wat happened
Did the new coils fix the problem?
We want to know😢
U are awesome bro u saved my car and my money....god bless u.
Your correct ! Spark plugs . That's what was wrong with my 5.3
A system programmer I once new would say... "Don't assume it's complicated... the problem is probably simple or stupid... ". I went through this problem with my 20 year old Corolla.... I replaced the plugs with good platinum ones and that's it. About $30 for them and wipe the 'boots' clean of any oil and blow the spark plug recesses empty BEFORE removing the plugs (dust, dirt get into the recesses at the 4 plugs). If you are handy, the throttle body and IAC valve can be cleaned after removal. A chore... ? Yes, but a shop will want a few hundred to do it...
My 2014 gmc sierra 5.3 is throwing po300 code. Now also catalytic converter bank one and two. It runs good until engine is warm then the misfire starts. Any advice is greatly appreciated
Thank youuuuuu! This single Mom of a super kid in a school farther away (magnet school) that he loves, thanks you!!!!
Subscribed!
Great video, just want to point out that depending on what type of vehicle you have, you may want to check the manual before disconnecting your battery to clear the codes. with some newer vehicles it can cause problems.
My 2001 Lexus was running great one minute then felt like I lost half the engine. Already knew I was dropping cylinders. Went to a place, got the codes read and it's # 3 and #4 are misfiring. I'm replacing all 6 coils and plugs. I've owned this for a year but I know the guy before did little to know maintenance. When I bought it I changed the oil right away. It was water thin and coal black and smelled horrible. Cabin filter had never been replaced. Just things like this. I expect to see rusted, nasty old spark plugs. Just hope they aren't seized in.
I went running around to 3 different autozone for my parts but more cheaper than taking it to the shop
The budget mechanic in Hawaii? That sounds like an oxymoron if I've ever heard one. But you know your stuff props brother you got a sub.
Mahalo!
U a life saver bro 💯‼️🙏🏾🙏🏾
IDLE AIR CONTROL (IAC) can cause rough idle, happened to me, easy to fix
I had an intermittent CEL, it would come up when idling and start flashing, then would be solid after driving for a few seconds, just did the spark plugs but i checked my spark plug wires, one was sort of loose so it would vibrate off a little, so i just wiggled it a bit and pushed it down harder and its been fine for a bit
I have that going on too. Thanks for the help!
Going to try and clean my iac. See if it helps
I tried the replacing the gas cap , dash showed Engine check light, tracker off, VSC. I tried Sea foam . I will use the code reader when I find it. My friend said he believes it is the spark plugs.
Thank you sir! This video was so helpful for me! 🙏🏼 god bless you!
Thank you so very Much. This Video Help me Alot
Man, thanks a million!!!
I have that same issue . Going up a hill and losing power. I changed the spark plugs and wires and it still does it
Very good teacher
Found spark plug wires eaten by mice. I understand they like soy based wires.
I took into a shop they charged me dignostic and said I needed a complete tune some kind of chamber and throttle body clean. All I could afford was the diagnoses fee and to get my van back and a pack of spark plug wires.
Thank your for helping with Diagnosis. Next week I will afford to change oil.
I have had a random misfire for a couple of years now. Multiple mechanics have tried finding the culprit, with no luck. Done multiple fuel and intake cleanings, replaced intake gaskets, new spark plugs, nothing has worked long-term. Sick of spending money at shops and having my car tied up for days so I've just let it run as is. So frustrating.
Sell your car and get something different at this point.
Probably the catalytic converter
have you tried to see if your coil pack are plugged up in the right order
@@bryantlewis8668 would u have any suggestions on one that’s wanting to chug off n on , but gets literally bouncy beyond really needing / wanting to drive it . i mean , it’s just something u know. Hooked it to the machine it said ‘ cylinder #2 and a spark plug “ I think I said that right … but yea … it’s still the same after replacing the two . I’m not close to town . should I have unhooked the battery a few and reset anything? or do u have any other suggestions? Ty …
@@nvrgvnup4346 un plug the wire connected to to the cooils ONE by ONE and if u unplug one and the motor starts vibrating that means its in the right place amd its working. If you have your wireset connected wrong the motor will definitely move alot making it seem like you need motor mounts.
Thanks for this man! Simple and easy. Subscribed!!!
I just had a tune up so it shouldn't be a spark plug, but I still think it's a misfire. And btw, your Mr. Fire. Js. ☺
I got p0430 code change Cat it's that simple on my car
Every car is different
So how many cats you gonna put in before you fix what's causing them to fail
Muchas gracias por el video muy bueno!!!
Extremely helpful. Thank you so much!!
You're one of the few that I trust with my car problems! Keep up the good work. And a sub from me to help with your journey!
Mahalo!
@@BudgetMechanicHawaii yw! may mana O aka mai guide your way to success!
What do you recommend for somebody with OBD1 which doesn't work anymore?
Just making sure you are using an obdI capable code reader, every parts store around me only have the OBD2.
I fixed mine by finding the power source inside the obdI casing with an ohm meter and re running power to it, not the perfect fix but it worked. If it's got power then I'd check the ground and see if anything else has a Open loop fault on the meter.
Hopefully this will help
Thank you bro for your help I appreciate.
Wat
Sounds like just a good car wash will fix these problems. And don't forget to check the blinker fluid too.
Haha
Right! Any nine-year-old could have told you this crap
Could the engine light cause idling? If so, would a change of spark plugs suffice?
I know this is a 1 year post but everyone else who reads this... It probably would be a good idea to check spark plug gaps,boots and check the wires for any cracking which could all cause a bad running engine
Excellent video - Clear and straight forward. It feels like I've spent my whole life on the internet looking for advice about this and now I've now find yours. Thank you!
I have a question please that is directly related to this video - After not using my car for a month and then taking out the battery to recharge it, I have a misfire in cylinder 2 (P0302). The symptons are exactly as you have described, loss of power moving off or going up hill at times. A slow, gradual increase on the accelarator helps otherwise it starts chugging and can even hear a brief whacking noise if I floor it especially in a higher gear. It was (or seemed) absolutely fine before I left it for a month. Should I still replace the plugs? I thought it might be some kind of moisture getting in after leaving it for so long but it's still the same after a long drive. I'm worried that I might be causing more damage. Thanks again.
A few things could happen from a car sitting including bad gas clogging injectors, oil leak pooling and fouling plug/coil, animals Messing up wiring, or maybe it’s just coincidence. Best thing is to pull the plug and inspect it, and move on from there.
@@BudgetMechanicHawaii I was drivine and my car and i used the big lights to do a signal to the guybin front, suddenly car reduced speed, opened ABS light and engine flashed. The flash light its still on, but can I ask you what you believe the problem might be? I tried again to flash the big lights it happened again, ABS flashed and car reduced speed.. I would appreciate if you can give me your advice
Fuel injector removal
On a 530i bmw
On a Godam sideways engine I did it once dude now it might be head gasket. There's no room to see very good
My engine lights been on about a month now, it flashes sometime but still has power going up hills....it shakes a bit but doesn't affect the driving. Could it just need a service as it has gone over by 1,500klms
Handsome and helpful. Thanks Josh!
Thanks
Instructions unclear, car started on fire
My engine light is flashing when travelling at 100kph. Car also sometines loses power when travelling at a lower speed so I have to quickly restart the car and it fixes the problem temporarily.
Did u find a fix im having the same problem
@@royale9998 nah, apparently it's a problem somewhere in the pistons or piston rings so I'm just gonna get another motor
Hi! Thank you so much for taking time to make all the videos for us. Please help me. Here is my issue.
I just bought a 2003 GMC Sonoma SLS 6 cylinder Truck . The truck shakes/vibrates really bad once started. You can literally see the engine moving and shaking. It shakes throughout the drive and also appears to shake even more when at stopped light. Just yesterday afternoon, i was at a red light waiting to make a right turn onto the freeway. Once light turned green as i was pressing the gas and turning my steering reel it became hard to where i couldn’t turn it normally and literally suddenly just died on me. Thank goodness there was no other car making a right turn on the far left lane because when my truck steering reel became hard to turn the car went toward the left side. I tried few times to start car and it started and i went to the left turn trying to turn into the 7’eleven parking lot, right when i went onto the parking it died again. This time it took more times until car started again and this time when it felt as if the car is starting i gas it to help turn on.
Then i drove just across to Oreilly and the worker scanned car and a code on his machine detected Cylinder 2 misfire.
Purchased NEW:
Spark plug wire set
6 spark plugs
Replaced it on car. Still not resolved. Upon checking the MAF sensor was no good, the distributor has a line cracked on the number 2 .
Went back to Oreilly: Purchased NEW
* MAF Sensor
*Distributor Cap & Rotor
Replaced on car with those too.
Again NOT Fix still showing code Cylinder 2 misfire.
Issue present:
1.Shaking/vibration on car really bad and loud.
2. Check engine light comes on and off (flashing)
I do not want to guess on what it is. Can someone please guide me on what to do next that can fix this.
**At this moment writing this comment, i am in the car parked at Oreilly debating what to get.
***also when i moved wire on cylinder 2 to 4 and 4 to 2…it still show cylinder 2 misfire even after moving it to 4.
Do i get Fuel filter?
Were you able to get this fixed?
MY car runs beautifully when cold, warms up p0300.used stethoscope every injector is working. Disconnect 1injector at a time and there's no difference in the way it runs, like every cylinder is dead. IT'S driving me insane.2003 Cadillac DeVille.
I got a 2015 GMC. It’s misfiring pretty bad . Engine light is blinking and stabilizer light is on also. Changed spark plugs changed the #3 coil cuz that’s what the code said. Nothing has changed. Took it to a mechanic and he checked it and said it was the cam shaft. Along with the #3 lifter. ..... expensive fix.....
I have a 2001 chevy 5.3 186,000 miles, rough idle almost all of the time, check engine light on flashes sometimes, here is what i have had done to it so far, New MAF, both front o2 sensors, plugs, wires, MAP sensor, engine coolant temperature sensor, all new injectors, new Manifold gasket, fuel pump and filter, i havent replaced the coils as of yet cause it's been in 3 different shops and they all tell me the coils are all good (starting to wonder if they really are) its been smoke tested no leaks, it had compression test done all good, they did a fuel test where they drained the fuel to see it was contaminated or not and it was all good. oh also replaced the cam sensor when i did the manifold gaskets since i was in there and the knock sensors were good, i checked all the grounds all seemed to be good. all the parts i put into this are OEM parts never went with the cheap knock off parts, i have over 5k parts and labor into this thing and its running worse than when i 1st got it, started off p0171/p0174 codes them are gone now its p0300 code and im at my wits end with this damn thing lol.........Any ideas? inbetween some of these fixes it ran better, the last thing i did was the manifold gasket and it ran pretty good then just one day was crap, cant even drive it 2 miles down the road without thinking she's done for
That will destroy ur catilitic converter
@@eddieclark4477 What will destroy Cats? the p0300 code
@@kenkeezer4875 a flashing check engine soon light is telling u to pull over as soon as possible and cut the car off. The onboard diagnostics(PCM) has detected raw fuel coming out of the exhaust and not being properly ignited in the combustion process. A rich condition(not the proper air/fuel ratio that is needed to achieve the maximum performance and driveabilty it calls for(14.7) 14.6 parts air and 1 part fuel in every cylinder exactly to achieve maximum performance and perfect driveability to get the perfect gas mileage possible. The oxygen sensor detects only oxygen in the combustion process. Either not enough oxygen(lean condition) exactly in each cylindernough oxygen is)discharged more cylinders is misfiring 's misfiring
@@kenkeezer4875 a DTC (diagnostic trouble code) is set by the onboard diagnostics computer(PCM) to let u and the task master know that the misfire is so severe it's flashing on and off. Meaning raw gasaline is coming out of 1 or more of ur cylinders during the combustion process. Not being properly discharged out of the problemed cylinder/cylinders. Raw unburned fuel released into ur catilitic converter will kill it. Plus it releases carbon monoxide gases(poison) into our atmosphere through the exhaust pipe and muffler. The oxygen sensor detects only the amount of oxygen that is in the combustion discharge process.it either detects to much oxygen(lean condition) or a rich condition(not enough oxygen) either way the PCM will either add more fuel to the cylinder (lean) or subtract fuel (rich) to achieve the perfect 14.7 parts air 1 parts fuel charge out to where it needs to be for that perfect driveabilty and the high performance ur car needs to get the best gas mileage possible. That means ur happy and ur cats happy. Fuel trim numbers are whats important here. to get all ur cylinders back on track and hitting that 14.7 parts air and the 1 parts fuel is what the task master is trying to figure out so it can errase that (dtc)diagnostic trouble code from the PCM and everybody is happy again. You know man the thing that u need to do right now before you start sinking more money into ur ride like that to no avail. I would take ur throttle body off and clean it real good with carb cleaner rags and tooth brushes. Sounds like to me all ur really needing is that throttle plate cleaned out good because its eirher sticking open or sticking shut causing it to run rough or not want to run at all. Sticking open or shut throttle plates makes a car run like fkn shit dude. Clean it real good put it back together and ill bet it runs like a brand fkn new one again brother. Let me know how it does man.
@@eddieclark4477 Thanks for all the info Bro, i will get that cleaned out and will let ya know how it turns out, might be a week or so as im out of town in a couple days.
Awesome. Thank you so much.
So just throw parts and Money at it until it’s fixed lol
Yes you can save a lot of money
Yes
Could you get missfires from a bad knock sensor?
I just replaced the coil packs that were $300 in my wife's 2007 Nissan Altima now after it gets hot it runs very bad if you try to take it easy it seems like it might stall out but it won't if you press the gas to the floor that thing will take off but the check engine light is flashing the check engine light has been on since she bought the car so there's something minor making the chickens and light coming on but right now it's something major and I know I'm going to get misfire codes but I've already changed the coil packs and spark plugs... Yesterday after I got it hot and running and it was running like crap I lifted the air filter up and it seemed like it got a little pep so it might have something to do with mass air flow sensor I hope I do not want to take this car apart again 🤦🏻♂️
He's so my type, but back to the topic of discussion 🥰
Lol! I was just thinking, "Oh, he's cute," when I saw your comment. Haha!
@@wtfroggers 🥰🤗
my saturn vue 2005 check engine light is blinking right as this moment my mechanic told me to just check the oil first and go from there my oil was empty like none what do ever
hi, there i just replace spark plug and coils on my nissan pathfinder and i have p030 how is that possible friend thank you for your videos
Misfiring? If it happened immediately after the job I would double check all the connections. If it happened a short time later, it could be the coil failing, sometimes new plugs push an already failing coil over the edge...
How about getting a broken solenoid out of a 99 Lexus rx300
YOUNG MAN ,
MY WAS > " FUEL PRESSURE REGULATOR "/ SMELLING BAD GAS , ROUGH RUN
I've done everything to my corolla got dead cylinder not working
Thanks.
Helped alot
Man I ruin my cvt thinking it was going out when in reality it was just a bad coil pack 😭
Will a cylinder misfire cause a car to cut off or not crank up?
I have a 2012 Hyundai veloster. Miss firing on all 4 cylinders. What you think the problem is? Has close to 90.000 miles on it.
Bonneville 04 3.8. Top and bottom coils not firing, changed ignition control module, change the crankshaft sensor's still nothing. Changed the coils, help man!!!!! Showed a miss fire code
“Needed a throttle body and decarb because too much carbon was building up. Performed fuel injector flush as well and replaced spark plugs and wires.
They did this to my truck 5 days ago and and the same day I picked it up my check engine light came on.... any ideas what might have happened???
I changed spark plugs,6; ignition coil, 6; also the oxigen sensor, the EVAP purge valve...and still I have a flashing engine light.!! The scanner continues reading the same old codes... 0300, 01,02,03,04,05,06..and on.... please advise.
Tks.
Sam. From Texas
What about honda accord 2008? We got the misfire code as well.,
2006 dodge Charger 5.7 hemi throttel body is clicking and white smoke is co ing from tail pipe not knockingjust ruff running and smoke
Did u figure this out
No engine light? White smoke usually indicates coolant getting burned (head gasket fault etc)
Do I need to reset my throttle body after changing power control module
I did change spark plugs, coils but still getting misfire on cylinder 4 & 2. I think I need to change the injectors. The compression on each cylinder more than 120 PSI.!?
My toyota hilux vigo same problem but no code when mecanic scaned. Pleasw so you have any ideas
Coil packs!
Okay so what do we do if we are still having rough idle and we’ve changed all the spark plugs and 3 of the ignition coils. (4,5,6 to be precise I believe because the code reader noted these). Check engine light is still on and it’s still not driving or sounding right. Does this mean my engine computer is messed up and is causing the misfiring?
That pertains only to petrol engines, not diesel
I have no codes. Limp mode engine light flashes. Replaced coils and plugs oil change still same issue. Another odd thing if I press the deforst button the doors lock. 2014 Fiat 500l lounge 1.4l.
@@laurasyn820 All good there too. And again it's working 100%. Heat wave is done. I think its electronic. Because it seems more anomaly than anything else. As I mai tain it well. But its not fun when its acting up. But for now its fully tuned up again in less than a year.
P300 O2 sensor. Stuck injector, coil, plugs, ect...
Hi, is there a ventilator in the area where the coils on a nissan 2005 ?
I dont have power to the coils number one. how to check the wires?
My 2004 Yukon engine light flashes when I do around 70mph, my manual tells me to just slow down until it stops. What could it be and what should I do?
You need to get your computer codes read and start from there.
its your catalytic convertor
My 2000 eldorados engine started knocking today and lost a lot of power going up hills. I stay in Oahu do you have a shop out here or recommend a good one?
New plugs new coils missfire #4
Time to check injector!
To cheep for new spark plugs. Spray the dirty ones with WD-40 and clean em with a wire brush
2015 camaro ss... check engine light, stabilitrak and traction control lights are all on. Sounds rough when idling.
I changed all the spark plugs, changed the air filter, changed oil, and cleaned the throttle body. Nothing changed at all as far as car performance, still idles and runs rough, especially when decelerating. Feels like the car downshifts too early and causes a jolting. Any ideas?
If your plugs, wires, ignition coil packs if you have them, furl rail, fuel injectors, fuel filter or fuel pump have all been replaced and you still have issues hate to tell ya you have a bad cylinder or cylinders and should get rid of your car while you can or replace the motor if you have the money. Check you intake system as in air filter and vacuum lines and if it still spits and stutters and or lacks power here and there again bad cylinder,,,,
I have a toyota camry 2018 se 2.5l
I have misfire cyl 2. Code and also random misfire I believe p3000
I have new fuel pump and filter. New Injectors.. new spark plugs. swapped coils to check if it changes to different cylinder code.
Checked leakage for valves. Good.
Intake sensor good. MAF sensor is good.
Haven't checked compression. But when I disconnect cylinder 2 while misfiring it doesn't change meaning seems that exactly still the area where the problem resides. All others (1,3,4) when disconnected cause it to misfire even more..
I do also get engine power reduced sign on dash.
May my 02 sensor for any faulty reason possibly be causing my ECU to think it's running rich or lean and be causing the random misfire and the specific cylinder 2 misfire?? Without popping up a 02 sensor code on OBD 2 scanner???
My engine light 💡 is blinking and I saw one of the exhaust manifold are missing a bolt and it just slid off I have to get back home what do I do
Did you make it?
I have a Kia Sedona 2015 and its showing P0302 P0304 P0306, Spark plugs have been replaced along with coils . Codes are still showing same thing. Mechanic says Fuel Injectors need to be replaced. How hard is it to replace injectors?
How about this. My 2006 Chevy Aveo,yes an Aveo, 47K miles, kept in top shape. The CEL flashed yesterday,2-3 mins. Then stopped. Then my Sony aftermarket stereo ,in the car 3 yrs,started to flash through its settings,the faceplate colors changed,etc. But still played the CD in it.Then it stopped. No power loss,runs smooth,no hesitation,no smoking,nothing. Pulled the battery cable to erase the CEL, it went and stays off, so far. Just a fluke? Battery is 8 months old, E3 plugs, 1yr. Trans. shifts fine, I'm stumped. Ideas??
Ever figured it out?
My 2007 city golf 2.0 is running extremely bad but only when its wet out and when its dry out runs fine
But when i take it to the shop NO CODES I've changed wires plugs nothing
and I mean it runs so bad i think its gonna break something
what do you think? remember only when its wet the more moister or rain the worse
Check out ur PVC valve. Pull the valve out of the valve cover and shake it. If it rattles the valve is good. If it don't rattle replace it. If its good check all the vaccum lines to the PVC valve for blockage/disconnected/crimped hoses as well.
What if you've already changed your spark plugs spark plug wires and a coil pack and the check engine is blinking
Still misfiring. Time to check out the other reasons we talk about in this video
Have a 97 Tacoma 2.7 I replace spark plugs, wires, fuel filter, air flow sensor, fuel injectors, took it to the Toyota dealer for a diagnosis they did the compression test was fine but they told me that #3 injector was bad my question is if the injector is not the problem what else can it be?🧐
Damn did you fix it ????
@@Sethcanfixit I did, replace the computer and fix the problem.
What part was it. What you mean you replaced the computer? The ecu? Please be more detailed since im having the same issue would help me out
@@Sethcanfixit yes the ecu, was not sending the voltage needed to the injector in my case was cylinder #3 the ECU cost me $218 dollars on eBay and it was relatively easy to replace😅
Thanks much appreciated i got the code p0303 today wish me luck
I do have a problem loose power and passenger side exhaust air leak already change spark plug and coils and still happening what can I do next
I changed my ignition coils and spark plugs on my 2010 Jeep Compass but my check engine light still says cylinder 4 misfire I don’t know what else to check for. Help please
If you’ve cleared the engine light and it’s still coming back it would be time to check injector on that cylinder and make sure it’s working (or try swapping with another cylinder and see if code changes). Also possible your new coil isn’t getting power (ignition problem) Also you might need to get a compression test done and make sure you don’t have valve/ring problems
If you're still having issues, it's worth checking the spark plug wires, and the distributor cap and rotor, if your vehicle is equipped with them.
I had my car scanned it showed 02 sensor lean or high and secondary was a misfire and my car just all of a sudden it started spitting and sputtering check engine light is blinking
My engine light starts flashing when I pick up speed on my vw touran
Check engine light flashes on my 03 mustang it shakes hesitates and is really slow. I changed the plugs and plug wires it calmed the effects for a little but it’s still there and is getting worse
Car only has 80k miles and I checked for codes at auto zone and nothing came up even though it has flashed many times while driving
Does your car have a main coil pack or individual coils on the plugs? Coil problems would be my next guess if you’ve replaced plugs. possible that is failing and producing misfires. Sometimes new plugs will even make failing coils worse. Also I would get the light checked somewhere else then, there’s no way a flashing engine light would produce no codes...
Budget Mechanic Hawaii it has individual coils on the plugs I also checked the air filter and it’s clean, do you think maybe it’s possible that it has something to do with the fuel system or an o2 sensor?
Budget Mechanic Hawaii just took it to a mechanic and it ended up being the coil pack as you said
X possible clogged fuel injector!!!vital that plugs are gapped and torqued to spec! Clean air filter!! I used a bottle of Lucas fuel injector cleaner and gallon of laquar thinner with ten gallons of unleaded ran till tank on empty! Have not had an issue, if to far gone you may also experience transmission slamming into gear.. it’s just the computer trying to figure out wtf!!! Is going on!
Do you gotta do something uf the have oil besides replace?
Good question!
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Man i've changed Ignition coil spark plugs 02 sensors Gas cap and a vacuum sensor for the gas on my 09 toyota corolla s 1.8L, 5 speed. And can not for the life of me. Figure out why I keep throwing these codes. I'm about to drive it off the cliff
Misfire? Injectors? Compression test?