09 Buick LaCrosse Intermittent Misfire P0300
ฝัง
- เผยแพร่เมื่อ 4 ต.ค. 2019
- This is a GM 3800 engine with a misfire complaint, especially during a cold engine start up and also under load. At times it will idle fine. In this video we will be focusing on testing the ignition system, including the following tests: scan data misfire counters, cylinder drop test (coil stress test with a test light), ignition primary current, ignition secondary kv, coil swap to determine condition.
Related video:
Ignition testing with a scope (Secondary Waveforms) - open plug wire
• Ignition testing with ...
Symptoms and causes of a bad ignition coil
• Symptoms and causes of...
ScannerDanner Tools:
www.scannerdanner.com/tools.html
www.amazon.com/shop/scannerda...
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC. - ยานยนต์และพาหนะ
Don't forget, today is the last day of the 10% off sale on my Teespring merchandise. teespring.com/stores/scannerdanner-2, thank you so much! Here is the discount code L3AV3S
For the record, you are NEVER long winded. I am appreciative of you sharing your knowledge and experience. I found this video particularly interesting and informative, as I have a couple of older GM cars. The extra time you spend discussing vehicle operation and diagnostic options is what makes you the best. Thank you for sharing. (Wow! No Chryslers, haha)
Thanks Andrew K, you've been a long time encouragement to me
True, I need to learn WHY not just How.
@@ScannerDanner You are very thorough & excellent at explaining 'quick theory' ( there's an oxymoron !) that directly relate to the possible problem(s).
This shows that you have been able to learn think logically & deeply about a particular subject/problem & then demonstrate your deductive reasoning.
The main theme that you always stress is the multiple approaches to a problem which encourages people to think for themselves & not some complex flow chart.
The practicality & speed of CORRECT diagnosis without damaging components is your forté. Thank you sir!
" In order to think deeply one must first learn to think clearly." - Nikola Tesla
@@pedrorojascervantes3928 what a compliment! Thank you so much for this blessing today
@@ScannerDanner You are most welcome my brother in Christ!
Maranatha! Come quickly Lord!
May the Lord bless you more as you continue to bless others so selflessly!
Anyone who says you are long winded is short minded. Great video
Matt! Thanks my friend
P. Danner was an amazing technician 20 years ago at Rosedale Tech and taught me so much. It’s good to see you are still going strong. Great video!
Thank you for this brother Scanner Danner, your test light test from about 8:30 to 13:00 was pure gold and helped me tremendously to confirm that I had a specific bad coil. I purchased a spark plug tester and it confirmed that I was getting spark from the wires/coils/plugs, but that didn't solve my problem as it didn't isolate nor confirm the I had a bad coil. I grounded the spark plug tester, used that in place of your test light, and found the bad coil when the spark between it and the tester fizzled out after about half a centimeter in distance. Replaced the bad coil and car has been running beautifully ever since!
THANK YOU for the teaching of the many ways to test the ignition system. While your initial test was too the point, I still had questions about plugs and wires , which you totally answered with your follow up testing. Now I have more complete and accurate testing procedures to follow. This is a GREAT lesson for anyone attempting to service the ignition systems, if you have some basic understanding .
For those reading this, and as Scanner Danner stated here, he has a WONDERFUL channel that goes through all these theories and many more.
I have spent some time in your classes, Danner, and am.much more prepared now with what you have taught in your class.
I will be returning to get more lessons from this master teacher. These classes and the way you teach are making me into a better tech , and answering a lot of questions I've had on electronic engine controls,.
Yes the seemed to have gotten more complex, on the surface, but many old school testing procedures still work if applied correctlt.
THANKS again Scanner Danner for all the effort you have put in to helping others understand more.
Thank you so much for this comment!
Interesting to see that a weak coil can manifest such a high secondary resistance. Good lesson right there. Thanks
I was hoping to have a wonderful teacher like you since I was young. I was very tired to get some simple information that is not reliable but now I thank God I am learning from the best teacher in America
Thanks my friend. I'm certainly not the best but I do love what I do. Thank you again!
Wow! Thanks for this video. Had the same problem on my 96 Deville. It would come and go and never throw a code. I changed plugs and wires and was gonna change out the ICM till I saw this. It was bad on the #6 like this one in the video and #7 was a little better. First set I checked. The other 3 were great! Changed it out and all good. Thanks again!! 😁👍
Those engines are built proof very well tested. Great video Paul and Caleb. Thanks for sharing
Good timing, just brewed a cup of coffee and sat down at the computer :)
for those of you who aren't aware or don't have a 5.5 mm socket a 7/32 inch socket is only a couple thousandths different works perfect. Personally I just painted a 7/32 socket and leave it in my metric set between my 5 and 6 mm sockets.
Thanks Paul for all you do for our automotive community!
Long winded? This content isn’t for everyone. Only those who actually want to know what they are doing.
Scanner Danner content all day long!
Thank you my friend
I learn something new from you always Scanner Danner! This is the 1st time I've seen the KV test.
I found a spark plug wire slipped off about an inch the other day on my 2000 Windstar at the firewall causing intermittent skipping and surging at road speed. I had seen plugs do that in the 02 Focus after changing 1st the coil pack, then the wires and finally the real culprit the plugs. So I started with new plugs on the Windstar and found the loose plug wire.
It had been that way quite a while too because it had some sort of dusty corrosion built up in the boot. It was shrunk up and dry and busted when I cleaned it out and forced it back on.
The boot is wrapped in electric tape now and working like a charm!😃
Thanks for the emphasis on checking the plugs and leads, when troubleshooting a bad coil. Great teaching point!!
I have a Chevy impala 2001, and I experiencing problems around that area,you are giving explanationabout, and my high school short semester, + working around, in that business, with friends, my biG brothers, experience, and knowledge, I have., Coming from Mexico don't take me too far, now that have a car of my own., I watched your video, and like to thank you for that
I like the footage when you looked around finding Danner. It made me smile! :)
Appreciate the great videos. I have two cars with the 3.8 GM engine; this was very helpful for checking for bad coil packs. Thanks.
Great video. I have a 92 Cavalier with the 2.2L that uses this same type of control module and coil setup. I've had to change both the module and coils a couple of times over the years. It seems like when a coil goes bad, it can take out the module. About two years ago I replaced the control module and one coil because the module went out and the coil had a crack in it. A year later the module goes out again and the coil that I didn't replace the previous year now had a crack in it too. Plugs and wires were also fairly new. This system has never seemed like it was trouble free as I've had several cavaliers with this setup and I've had to do control modules and coils on them all.
Outstanding explanation skills how you go into detail and explain things so the layperson can understand !
Thank you again Danners cubed. Good job. Have a blessed and safe week.
Rainy Day , Tropical storm rolling threw , Great content , Just wanted to say , Great Instructor , Tech schools should all be so lucky to have an Instructor this thorough
I appreciate that!
straight to it, another example of not forgetting to check your basic's first, nice vid mr danner.
Paul and Caleb excellent video with great theory. Thanks for showing the scope pattern. Very informative. Going back to chap.one to refresh my brain. 👍👍👍
Nice work dan love the content and the way you explain all the the details on how to check everything that will and can cause the issues ....Thanks...
Great video!
You should start all of your videos with the introduction you gave on this one. People are all ways looking for the quick fix.
Thank you so much for this video I have been waiting to see you have a car with the 3800 engine I have one in my 01 Monte Carlo SS If you remember im the one who posted a comment about diagnosing a no start (no crank) only using a test light and the cause being the transmission because the neutral safety is inside of it as part of the electronic gear selector if im saying that right just one thing I want to point out is that on my 3800 that btw has less than 100k on it is that it also has that secondary air pump it's mounted low under the air box and can be seen by removing the driver's side headlight. Anyway thanks for posting another great video and your book is #1 on my wish list for the holidays 👍
His book is beyond amazing . It has helped me more than the dozens of other books I have all put together . Best automotive teacher on Earth .
Thanks Paul and Caleb. Enjoyed the entire video and picked up plenty of tips with the discussion.
TakeCare,
Bill
THANK YOU for using the old school test light. You're the man bro!
Your very good at explaining the process and including typical TH-cam watcher concerns/questions ahead of time.
thanks Wyatt, it comes from hearing those questions in my head before they are even asked. How? Because I hear you guys in my head all the time! lol
AHH! Got you right in the thumbnail! I hate when that happens, lol - I think it scares the crap out of me more than it hurts, every time. :D
Was just thinking of how much money this video would've saved me if it had come out when I first got my driver's license. HEI modules, coils, maybe even caps and rotors. I always ran plug wires until the spark came out of the sides of them, and the plug gap could only be measured with an Allen wrench. Back in those days, the stuff still lasted quite a while before it would cook!
Great one as usual, brother! I lol'ed at Caleb bustin' your chops again. :D
excellent video! i was thinking hook up a scope and do that test so people could see the results as they show on a screen and you did ! now if you only showed the old time pencil test for polarity.... but then who runs a beer can coil anymore. i always liked the raster and parade views on the old sun scope for comparisons. made life simple except for dragging that heavy monster across the shop.
Even when I think I know most of this I still pick up clarifying details. Thanks for the effort Paul!
Isn't that the truth. I learn something every time.
Now u have a new subscriber and a student as well fr philippines. I keep watching and watching ur tutorials im a new mechanic and it really helps me a lot.. Thanks for sharing ur knowledges..
Awesome!
I'm always hesitant to remove plug wires from the coil with the engine running. Got bit enough times to know better, especially with old wires! Good Job and theory of operation, plus Nice Diag!
Same here. That's why I bought good quality boot pulling pliers many years ago, straight and angled. They aren't the answer to all boot pulls, but they'll do most.
@@karpenterken1 Years ago I built a box with 8 spark plugs wires coming out of it, with spark plug ends in a "pass through" "Y." You plugged in the plug tip end to the plug and the plug wire end to the sp plug wire from the distributor. The wire to the box was grounded to see if the the cylinder was working. Beats getting zapped!
Great vid Paul and Caleb. Thanks again from Australia 👍
Always appreciate your lessons and education.
A 7/32 socket works well on 5.5 mm. Thanks again. Have a nice day.
That's awesome to know... thank you! I have 5.5s, but in case of loss, knowledge is power...
Was going to post the same you beat me to it
Great video as always Danner. I always learn something new from them(except the TPMS one. LOL).
Well done educated video, i love that you show us how things really work, million thanks🤙
It's nice to see you back. Been following a long time it seems like. Hate to see the nasty comments some leave. Give Caleb huge hugs from us from around the world.
Thanks man! But I haven't gone anywhere have I? Just curious, I've been uploading here consistently, more so since Caleb is helping me, but I've not had any long time away periods. Maybe you just weren't being notified?
Idk if you will see this cuz I'm 7 months late sry buy I dont watch you that much anymore, but this video just got me excited again like when I first started watching u, I love when you go in depth and then beyond to actually understand what the problem is, I think I'll even subscribe to ur website again just because of this video, keep em coming just like this, but on more complex problems, love u danner
Thank you!
Just watched the 86 Mustang show brought back some nightmares for me on a 91 E150 had two reputable shops that could not find the problem and that being it would quit without warning multiple modules were installed turn down to be distributor wasn't grounded to the block had corrosion between the two what a nightmare thanks again
@26:21 I thought about buying that Secondary Ignition Adaptor years ago, but I found that Snap-on had a single cylinder ignition pickup and an adapter that plugged it into the Vantage Pro that I wound up going with. You can only look at the ignition waveform of one cylinder at a time, unless of course you were working on something real old with a distributor and a separate ignition coil and coil wire that fed into the distributor. I’d have to play around with it some to get it in the right spot, but a lot of times, I can even use that pickup to look at secondary waveforms on coil on plug setups.
I got an old snap on kV tester that works great and fits in your back pocket. Got it new over 30 years ago but over the years with coil on plug setup's it graduated to my old school never used tool box.
Thank you so much for your time an another great video!
Caleb ? Sorry if I misspelled. Your video’s are great. Keep up the good work.
Vice grips...
Used as replacement for broken water valve handles & weak hood struts in shops all over the world!
Great diag Paul!
Another great weekend whith the team Danner thanks
Thanks for video, with knowledge and test light solved the fault. See you and next video.
I was looking all day for a tutorial on this. Thank you so much, I’m a do it myselfr lol
Excellent case study, A + Rating.
Paul, great video as always!!!!!!
Brave man I never touch any ignition system parts when running had to many bad experiences lol
We used to do that test
Coil reserve test back in the 60s pulling one plug lead off making the coil voltage high in the dark if there is an HR leak it would show up as small Sparks and sometimes depending up on the amount of leakage you would hear a cracking sound
I thought the 3800 ceased to exist with the Lesabre in 2005, you learn something new everyday
The longer the wind, the more information!
It said your suretrack subscription is expired.
If so call em and say you just bought the tool and ask what kind of deals they have as you've been looking at them, identifix and alldata and they'll make you a offer cheaper than the last price you posted. I think I got it for $145ish before taxes which taxes bring it to $160ish or so.
Yeah now that he's got you down there he don't have to diagnose anymore. I'm sure being the brother there's not a downside to that.
Keep up the good work! Still thinking about heading to Philly this week but would like to get a couple guys to go to Super Saturday with me.
You are a beast Paul! I am saving money to buy your book! God bless you!
Xavier Gonzalez subscribe to his on-line class, it’s worth it 💯 %
@@HomieHektor thank you!
@Xavier Gonzalez thank you!
Online class and videos are golden. I've used the videos more than once to reference back to on something I was working on while working on it. I take my smartphone which can share the data with my scan tools and my iPad so I can pull stuff up on site.
One thing to remember though if you ever get shopkeypro and are a mobile mechanic make sure that's part of the subscription. I actually wrote it in the contract that I signed, scanned and emailed back to them as they monitor piracy closely so when they see you popping up on different ip addresses which are tied to different cities as mobile data can be they won't shut you down for violation of terms of service. They know my Snap-On scan tool serial number and know what other scan tools and devices I use to access their database so I'm good. I stay under the 6 user threshold so im sure that helps.
On a side note @Scannerdanner check the 19.4 update as they'll have the access for FCA vehicles. You as a tech, shop or tech with a shop invited by them have to register. Gives you FCA authentication as with the networks they want to know who's in these cars if they're doing network diagnostics for repairing and deleting codes afterwards.
Fee is $50 per year. After so many techs on plan each addl per shop is $2 per tech. So basically since as a business I paid the $50 I can put xxx amount of employees on for example and after so many then each addl will cost $2 per employee. Another way for them to get more money.
That fee will have to be amortized to the customers thru the shop fees thru the year.
More ADAS functions as well were added. Works with alot of the newer scan tools such as Solus Edge, Modis Edge, Verus Pro, the D8 and the other they came out with in the same 6 month stretch as the D8 along with the Zeus and other mentioned ones in the update flyer. This would be for the FCA access.
I haven't dealt with the FCA yet so I'll hold on paying the $50 fee. Do you or anyone else know if the new FCA deal will work thru the OBDII or will we need the workaround FCA cable that plugs in over center console area as I have that as I had someone who I was going to do a job for once and they backed out last second.
One thing I've found is people sure squak alot about paying a scan fee but I tell them I'm not going to just throw parts at your car.
Paul you've helped me alot with my confidence as moving from class 8yrs ago to automotive which I'd actually did in high school but gravitated away from until the last few years. I've always did my own repair work and even did the parts cannon a time or two and out of frustration from the dealers misdiagnosis and refusal to acknowledge or even refund for it I bought your book in 2014ish and the rest has been history! 🙏
👍👍👍👍
GREAT REPAIR VIDEO
GREAT MECHANIC!!!
I already received my T-shirt and my hoodie will arrive Monday. You live dangerous Paul pulling away secondary wires from the sparkplug w/o plug wire insulated pliers especially without misting them to check for spark leakage. I've been bit too many times and was waiting for you to saw "Crap" and don't do this to check for cracked or leaking spark plug wire 🤣 The best secondary wire test set is the Pico PP361 Mixmaster Secondary Signal Mixer 1 and has 12 channels to do up to 12 cyl engines. It comes with 4 secondary pickup leads and you can order a PP339 Mixmaster Set of 4 HT Pickup Lead Set to do 8 cyl and 2 sets to do 12 cyl engines. Pico also has PP400 which is COP Ext Lead Set of 4. The Pico Mixmaster blows the Snap-on Set out of the water just like the Pico scope blows the Snap-on out of the water. I loved my Snap-on scope until I bought my Pico thanks to Eric O from SMA and I'll grab my Pico first if I need detail & long time base without scope aliasing. If I need a scan tool and scope I'll use my Snap-on unless I need the detail of a Pico.
thank you my friend!
That is awesome.Greetings from Norway ,Stefan :)
When I saw the original wires I thought you might have a carbon track. Ran into that a few times on 3.8s. It would pop right out under the boot to coil mounting bolt next to it. That problem would have transferred with new coils and module.
well done brother. 100% great video very helpful
great old school diag . great one for the new bees to watch
Thanks for your education your book is great.
thank so much for the support!
Priceless
Apprecuate the detail
Awesome outstanding job have a great time thanks
Wow absolutely good video thanks
Another great video Paul! I really want to take a class on secondary ignition myself. Question though. On these coils, would you have been able to backprobe the module connector and see primary ignition? Its been a while since ive worked on these engines, so I cant remember, or not.
The current ramp was obtained from the primary ignition side. If you're looking for the voltage waveform, you probably can not get it at the module since the transistors are inside the module. However, if you removed a coil and put jumpers in it's place, you should be able to probe at the jumper.
The driver and power feed for the primary circuit is underneath each coil so you cannot view primary ignition voltage waveforms on this model. But you can view the PCM to ICM control signals, and primary current of course. Thanks!
@@ablackformula there you go, jumper wires and it can be done :-)
That is a HUGE shop! Does your brother wear roller skates?
I have an sia 2000, nice to use on older vehicles and to look at rasters. (Didn’t pay $1000). Use my inductive probe the most and my amp probe. Think I might have destroyed a coil by not checking the plug and wire wave forms after replacement. Good info
Really enjoy watching how your troubleshooting analytical mind steps through these projects. Random question...how often do you encounter defective new parts?
not to often but when I do, it can really throw you a curve ball. Knowing your fundamentals and trusting your testing methods is key in identifying a bad brand new part
You earned a like for taking 50,000 volts⚡️
Thanks as always Paul. I'm curious about the negative current tail on the current ramp. What is the theory behind a current flow in the opposite direction to conventional, and how is it related/caused by a bad secondary winding. Would like to understand this. Cheers, Alex
if the energy cannot be released properly, it will "ring" the winding and oscillate back and forth with each oscillation being weaker and weaker, so somewhere in there lies the answer to the current waveform. Sorry, best I got
Thank u!! This was very interesting!!
You could also test with old school MT2500 (if I remember number correctly)"scope on a rope" it just has dial and flashing light but was my spark checker for many years before buying my first MT2400 at yardsale for $1!
the MT2500 was a scanner (red brick), the MT2400 was the original Vantage
Thanks for this video SD. ☆☆☆☆☆.
I had to rewind to catch the "shocking moment" Been there done that. And I mean while its funny it really dont feel fine.
A good tool for this is a GTC505 engine ignition analyzer and cost wont brak the bank and it works vary good
I have a random miss, P0300. Looked at scan data history and all had some sort of miss, others higher than others and it is inconsistent. Live data has some random misses but not consistent. LTFT are both sitting at 25, short terms are around the same at idle. No change to longs when accelerating but short do go to 0. I'm suspecting fuel delivery problem. This is a 2001 Suburban.
My brother had a truck with a 350 while V8 would that same spider injection crap could never never get it to run right for more than a couple of days he eventually sold the truck because of that thank you for your video
Great video 👍
Great video, Paul. When are you going to do any videos on RVs? Some of us are waiting to see that. Those were so helpful.
I have an awesome video I've been working on but it just keeps getting put on the back-burner. I'll try to get it up soon.
@@ScannerDanner Thanks
Excellent. Thanks!
I Salute you paul.
Still with you Paul.
Waoo nice sir I love your work
Thumbs..... up Paul!
Ok I'm following you're video...😎
Thanks great job
This was really helpful.
One other test I would like to see is with a multimeter. Ohms
Ohmmeter testing of these types of circuits is weak at best. When an ohmmeter measures bad, it's bad, but when an ohmmeter measures good, it can still be bad. You won't see me using that tool very often for that reason.
@@ScannerDanner Ok, but I have used coils laying around I would like to check.
Useful info thank you
Thank you
better then my auto tech classes in community college
Hey paul. Great vid as always. I have been wanting to test spark with a test light for a while the way that you demonstrate. Is there a certain type of test light you have to use? And can it be hooked up to battery negative or only a body or engine ground? Thanks
Incandescent bulb only! No LED lights. You can find the light I'm using here www.amazon.com/shop/scannerdanner
Oh and use anything metal on the car. I try to stay away from the battery for this test
Awesome, thanks heaps
Interesting and quick. Curious abt the long negative current tail on turn off. What is the theory behind that? How can u get to a negative current spike ie current lowing backwards, from high resistance in secondary winding or plug/wire??
the current has no where to go with an open and it will "ring" the coil winding (oscillate back and forth) sort of like throwing a stone in a puddle
Got a good one for ya
P0011 Camshaft position performance
2019 Yukon 6.2L only has 9K miles
has had 2 oil pumps 2 camshaft solenoids 1 phaser magnet & 1 camshaft position sensor and still setting the code
So tomorrow I will be wearing one of your new t-shirts and having the engine out cause that’s what GM wants me to do (R&R Engine)LMAO....
It’s just funny cause we can’t even get an engine because of the strike stuff goin on lol
“LIKE A ROCK!!!!..”
I see those tails alot when i'm coil ramping even on cars that run pretty well. Whats causes that and how do go after trying to fix it especially when plug and wires don't fix that bad tail and ringing? I feel like i'm missing something or why thats happening because i thought it was secondary problem as well but is still there even with new secondary.