Why You Should NEVER SKIP YOUR IGNITION COIL DURING A TUNE-UP!!
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- Опубліковано 26 кві 2019
- Why You Should NEVER SKIP YOUR IGNITION COIL DURING A TUNE-UP!!
ACDelco D503A Ignition Coil: amzn.to/2DCgmtn
In this video I went to swap my ignition coil in my 1995 GMC Suburban only to reveal the fact that it was indeed broken to begin with... I was going to just change the original equipment ignition coil as part of a tune-up and when I went to pull the ignition wire from the top, out came the electrode with it. Who knows how long this has been broken but it's starting to make a few things I've been wondering about make more sense.
1. Low power; possibly caused by weak spark to the spark plug.
2. Running rich; again possibly caused by weak spark to the plug.
3. Random misfire under load; caused by weak spark...
I probably would've at least caught it during the plug wire change but man. What a find!!
Suburban, Tahoe, Yukon, Sierra and Silverado are all the same platform vehicle from 1988-1998 the GMT-400 and should all be similar.
**This channel is for entertainment purposes only! Do not do what I do. Do not take my advice. I am not a professional. The methods I use may be completely wrong and/or dangerous. Please seek professional help with anything and everything and do your own due diligence (research). Working on cars is extremely dangerous. I am not responsible for any loss of life or limb or property. DO YOUR OWN RESEARCH. THIS CHANNEL IS FOR ENTERTAINMENT PURPOSES ONLY!**
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I learn alot from you. I have a 1994 chevy. I watch your videos before working on my truck and it makes the work alot easier. Just replaced my spark plugs, next coil pack, then fuel injectors
I enjoy watching your videos more with every new one. You’re getting much better at this!
I'm having the same symptoms on my truck. I'm definitely going to change that coil. Great video 📹
Entertaining and informative! This guy is like Property Brothers working on cars.
My 96 is idling rough, got a few things in mind to check, but hadn't thought to look at that, thanks jimmy
Love the videos Jimmy! 🙂
Man you take a long time to upload videos not like before. I hope everything is going great in your life
One of the most neglected parts of the ignition system. Thanks for the reminder!😉
I never miss it...love buying full tune up parts its like my birthday ..
As the resident backyard mechanic to the family, I have seen MANY a part break in unusual manners. All the vehicles in the family are currently Coil Over Plug (COP) however; they are prone to breaking themselves. Had a spring snap in one of those, that basically created the same kind of issue you had in the video.
We love u jimmy Excellent videos and the best comments ever
In like 25 years of working on cars I have never seen that happen to an ignition coil my guy. That is wild.
Love the diy vids with the final test, engine start up
Been a mechanic since 1969 and I've changed a lot of bad coils. The ones that completely die are the easy ones, the weak ones are the worst to diagnose. I've relocated a lot of them because of heat related issues.
These little nuggets are gold. All troubleshooting techniques can be faked out by things like this so it's nice to see them.
I enjoy you vids. I have a 2005 suburban z71 80k. Love the truck. Just trying to stay ahead of things as parts begin to wear out. Will you do any suspension vids? I think some of my bushings are wearing out
Awesome, thanks for the video. My 1990 chevy silverado idle rough, miss fire and run rich, checked every thing, found the coil is bad.
I would have thought the Dyno test during the smog check would have caught the ignition misfire.
Thanks California.
The dyno test is only to sense wheel movement and nothing else... at least that's what the smog guy said..
@@1RoadGarage
Great.
Why do I get the feeling California's Smog Check Program doesn't actually reduce Smog, and just makes us motorists pay $50 every two years for a "Smog Test".
@@PanzerPlatform thats why in Ontario, Canada, we got rid of it, it's nothing but a cash grab, I mean HOW many cars, will fail a smog test, hardly any.? a safety inspection yes is important, a driveclean, waste of space
@@AdrianJayeOnline We did the same thing for the same reason in Oklahoma. Just a bunch of thieving politicians praying on the ignorant get that money. Thanks California for retaining those individuals.
Only if it sets a code in the vehicals computer will the check engine light come on. Also depends on the load on the engine and how bad of a miss-fire to be picked up by the sniffers if they still use them.
Can say I have never pulled a terminal out of a coil but I have pulled the terminals out of 2 different spark plugs, ironically they were AC Delco and both were from the same box of 8, this was back in the early mid 80's.
The white lines by the laminated core on sides is normal. If you are somewhere pitch black and raise the hood with engine running you will see the flashes from induced voltage on wires and on the coil where the white marks are located.
Nice! Listen to that engine purr!
Yes I have I work at the stealership
I had a Mallory Coil on my 1993 Chevy 1500 do the same thing after it was only 2 years old.
I am curious if this fixed the running rich (based on exhaust smell). Mine has the same thing.
Watch out friend. That car was previously owned by Scotty Kilmer.
Nope, didnt see a Toyota symbol on it anywhere.
Bernie DIAPER SANDERS Lukso either way if Scotty had it beware 😱😱
Fact's
Thank you very much for you video very helpful.
I have a Dodge Avenger 2008 4 cylinders, and as you mention sometimes I have random misfires (the ignition coils are new form AutoZone, Duralast brand, only two wires)... but in the same way as you, I did't get any misfire code such as P0301, 02, 03, 04...
So I decided to perform a visual inspection, and I notice that the coil connector was burned, not melted, but calcined...
What do you think is the problem, are the ignition coils overheating because the brand low quality?
Thank you in advance.
Never seen that one, but I've seen dozens of GM coils crack (in often difficult to detect places) and cause all sorts of weird misfires and drivability problems. The coils are one of the first places I look on "modern" GMs if its having ignition issues. A lot of the time if you spray them down with a squirt bottle of water at night, you'll be able to see them junk arc through the cracks.
good tip!
@@davewolf8869 Thanks, Dave! Also, I've had them where you can't see them arc, but can hear it. Little zaps...
I've had this same exact issue happen to me. Pulled out the ignition coil and out comes TWO pieces instead of one single assembly. Changed out the factory coil after 16 years.
Glad the video is for entertainment purposes only. Otherwise I might have gotten riled up and replaced the entire ignition system on our 2003 Z71 Tahoe.
on my 96 k1500 with 300,000 miles it did this hesitation thing 40-70 mph felt like the transmission was letting go, one day it just stalls and won't restart, had to get it towed home, do some diagnosis, spark only going to one plug on one side o the engine (didn't check the other side) so after replacing crank sensor and still no start, swapped out module, coil, ended up changing cap/rotor/plug wires and it started right up. the hesitation issue was gone, too, ran smooth, more power, gained 2 mpg's.
also what was weird you know the little plastic armor they give you, i did not install it, turns out idling at night there's so much energy out of that ignition system that if the main coil wire gets near any metal it starts to glow purple! so now i use that plastic armor. Also i notices a strange purple glow around the sides of the ignition coil! Time for a new coil i guess, too.
I feel like I'm watching someone out of Waterboy lmao. Appreciate the knowledge man.
GOOD JOB JIMMY,
THANKS.
-MEXICOCITY-
-HANSON- -HANSON- 🏌China?
I've had the same problem before on a TBI 454 and TBI 350. Both were traced back to the ignition control module under the ignition rotor.
The ICM is so prone to failure that I keep a spare in my glove box.
I want to relocate it and put a nice heat sink and fan on it so the damn thing will stop burning out.
@@BestLittleStudio great idea! Yeah I always make sure to thoroughly clean the mounting surface and reapply thermal grease.
@@aaronpowell4885 make sure its thermal paste for it not dielectric grease. ive noticed that happens alot two different things usually the paste for the icm is white in color. old comment but was doing research seen this.
Yeah they wear down and the electrical gap jump pushes that metal stud back and forth
Never seen that on a gm dual plug coil. I've definitely pulled plug wires apart but never a coil.
My same ignition coil in my 87 K5 Blazer with the tbi 350 is acting strange. It's a non running project, just trying to get spark right now. I replaced the ignition control module (ICM), the plugs, plug wires, cap and rotor. I tested the inputs on the coil and it was good. When the ICM was replaced, the electrode of the coil would spark on it's own, right on top, when engine was turning. It won't transfer the spark to the distributer. Now it doesn't spark. I'm thinking something is wrong and it outta be replaced.
Holden, GM's Australian subsidiary, imported Suburbans around 1998 in the hope of offering a challenge to the Ford F150 which were also being marketed. Needless to say, long suppy times, major driveline and body failures due to substandard engineering, limited parts availability, and excessive pricing (over $80K AU), ensured a short brutal introduction and sudden severance of import supply 6 months later to Australia, never to be seen again. 👍👍🇦🇺
In the ex-UK nations that don't have a unuon jack on their flag, we just manufacture our own vehicles. Think about it.
Thats a nice 5.7L jimmy i have one too and a 5.3L on my 2002 chevrolet tahoe.👍👍👍
Jose Luis Davila 6.0l here. getting 22/28mpg. its a hybrid version
@@punker4Real Nice im trying to get a 6.0L too
I just changed my plugs,wires,cap, and rotor about 3 weeks ago. My 98 K1500 ran great for about 2 days and then I started getting cylinder 2 misfires under acceleration. Would you suspect a bad coil? I used all GM or AC Delco parts except the plug wires. I used Napa Auto Parts Belden spark plug wires. Any thoughts sir?
I have a 99 suburban k1500 5.7, i did the plugs, wire, cap and rotor cap. Those parts were beat up! I smell Exhaust too . I a little more power but a cleaning would be nice?
I had to replace the coil on my '94 Suburban to fix similar symptoms, then month later the pickup coil inside the distributor let go causing the motor to randomly die on the highway. Be ready to do that next.
OEM parts are cheap? I bought an MSD coil for my Chevy, just like yours, from Summit for about $30 less than a Delco replacement.
Dear Mr.J
You can also paint the bracket by black colour.
First Thumbs up
I've seen the coil in two parts. Happened on my car two years ago.
Please make some videos on Toyota Land Cruiser diesel 3.0
How to increase HP or more power.
Thanks
Greetings from Pakistan
Replace the ignition control module with a brand new gm module would probably help as well and fuel filter..
If it also keeps happening you might want to check your control modular in your distributor. I own an 89 GMC Sierra k 1500 my control modular went out after 30 years.
Thanks Trevor!
never seen it that bad. can you please tell me the best coil for pontiac grand prix please? i cant get an answer from hardly no one. i know ac delco is gm oem. so is delphi i heard. is standard blue streak any good on my car? ive read alot of bad reviews on it.
If you'd used an ignition coil tester when you first noticed that misfire, you'd have found it straight away. I'll be doing a tutorial on how to use one of these in the summer:
amzn.to/2PNrGrl
Yes, I've seen that before. It's a mechanical failure of the solder joint due to NVH and removing and replacing the leads, straining the post.. You could strengthen the new coil posts up by putting a little ring of Q Bond around the base of each one.
Great video. Really serves to remind us all not to overlook the little things. It's always some tuppence happenny bit that brings your wheels to a halt.
FYI the 95 is OBD1 and doesn't have a crank sensor. That computer has no way to detect missfires. You could literally unplug a spark plug and it would never give you a missfires code.
Haha, thanks OBD1 🤦♂️
My car is 200,000 miles. What’s the best tune up actions I should do ?
I swear this sounds like the same problem i been chasing for two years i found this video on random just ordered part lets see
Let me know how it goes
Rewind on the call where does the white wire go to
I can’t remember or tell, but if this is the vehicle with the big 3 or 4 electrical/grounding upgrade on it, I would’ve looked for an upgraded coil, and then the rest of the ignition system too.
What coil would you recommend ? Most aftermarket coils are JUNK anymore, I relocate coils like these off the engine to a cooler location, like my Jeep 4.0 or my early Camaro's. Unless you have a modified vehicle stock coils are pretty darn good, checking resistance is always good on ignition systems, example -- coils, plug wires & plugs.
nowr2run While stock ignition from 20 years ago is adequate, better efficiency and emissions can likely be achieved with more modern materials/techniques. MSD, Accel and Granatelli are well respected for Ignition. And I’m sure there are others. I’ve even seen videos here of techniques that shorten ignition event duration to permit more accurate timing: look up Murakami Plasma Ignition, built upon upgraded coil and wires and centred on an MSD CDI box that claims to improve mileage and power output significantly (20-30%), while reducing emissions similarly. It all depends on how much you’re comfortable customizing your ride; for me, if a $500 investment in parts leads to saving $1000/year at the pump, it’s worthwhile. Further, if it means I can keep a vehicle of any era emissions-compliant for longer, it’s a no brainer given rising vehicle and fuel priices
I had mine go completely and left me stranded because it had spark but it was just so weak it was not even enough to start the engine and keep it going.
Upgrades on coils, or anything else for that matter. is a good idea in my humble,
non-mechanic opion.
GM (and everbody else), almost allways uses the cheapest parts possible, in order to cut costs ! !
(In other words, basicly cheap Chinese junk, before it was called " Cheap Chinese Junk". 😊😊😊
Any thoughts on this opinion professional mechanics ?
Thank you, and keep on wrenchin !
GM are past masters at cheapening the crap out of everything. Closely followed by Ford and VW.
And always carry an Ignition Control Module and associated tool for R&R with you.
Are you in eastern Washington?
This would have been a fun diagnosis with a scope.
I'd be delighted to see that.
The chirping sound you heard is Scotty being run over.
lol Scotty the racoon hands going all the time.
The spark plug might need to change as well,that could be another reason why the truck is running rough
Huh?
@@POOKIE5592 spark plug
I changed the original coil on my 07 Silverado at 200k miles. But nothing broke at all.
Something to note is that this is a 1995 vehicle so the original parts on it are still over 20 years old
Yes
Since you own a Suburban and an Envoy that makes you a “GMC Jimmy”
Prairie State Auto Restorations 😄🏌
I love my new wobble extensions for getting at hard to reach bolts like the ones for the coil!
Vortec swap that pos TBI
you sound just like my boy Hoovee
Chirping tires around the corner can also be a sign of him proper air pressure in the tires
If your mpg gas change tell as
Yes, I've seen them before....some 20 years ago. Modern cars in Europe do not have them in that form anymore. Only in America....
78000 huh 🤔 mine has 158xxx soooo gonna change that this weekend then. Thanks.
Actually, that's a new one on me lol.
The comments blow.
Dude you scare me when you say I'll see youuuuuu 😐🤨on the next one.
Yeah I've worked on cars all my my life, it's called age, it happens when anything gets used and you add heat.
Bad fuel. Use chevron with techron. 91 octane
that is what you want to use in these v8 engines
I use Shell for my 91 Camaro 5.0 TBI regular 87 gas
Yep, TBI engines are fairly picky about fuel quality. No shell or Chevron in my area, but I've had the smoothest performance in my 2 TBI 350's with Exxon/Mobil 92 octane.
Mine was in 2 pieces
The cheap ones are not waterproof!!! the newer ones have a module and heat-sink on the bracket as well.
calm down, you're being over animated
Gregg Myers 😄🏌
glad my car has coil packs. $5 each and takes 5 minutes to replace
$5 each....what car do you drive?
Lol. Nope. Not in over 20 years!😂
how crappy is that, to change out a coil, having it pop-riveted on
Chevy junk
This is all BS for that to have low miles and breaking shit on purpose to get views I have an 95 and with 200,000 miles and haven’t replaced nothing
That part should of lasted atlest 100,000 miles no problem.