Diagnosing Your GM Distributorless Ignition System

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  • เผยแพร่เมื่อ 22 ม.ค. 2025

ความคิดเห็น • 95

  • @denniswhite664
    @denniswhite664 2 ปีที่แล้ว +3

    THANKS.. a lot. Facing this problem RIGHT NOW. But did NOT want to "dig in" without some experienced, REAL true and tried
    advice. This really helps....boosts the confidence factor a lot. Bad weather here now - will go at it when the weather takes a
    turn. THANK YOU. YEAH...others have said,.. I will too.. "keep more videos like this coming." TY so much.

  • @dodgecoronet68
    @dodgecoronet68 11 ปีที่แล้ว +2

    It's understood that this test is focused on diagnosing a faulty coil pack, but it also applies to any gasoline-operated engine, to check for the reason why a cylinder is not firing. This was a great guide though, Craig. Keep more videos like this coming.

  • @ParadoxdesignsOrg
    @ParadoxdesignsOrg 11 ปีที่แล้ว +4

    dead coils is something most people don't check, good video man, especially make sure grounds are done well on everything.

  • @rickoldfield6818
    @rickoldfield6818 2 ปีที่แล้ว +1

    This video was great, I have a 2006 Buick Allure with the 3800 V6 engine it helped me immensely, I’m thinking my issue is the ignition module plate, all of my coils seem to be fine, but there doesn’t appear to be power going to the bottom coil.

  • @Querencias7
    @Querencias7 8 ปีที่แล้ว +2

    Excellent video. Nice job and advice, and results.

  • @abedj1220
    @abedj1220 8 ปีที่แล้ว +3

    Well done. I have a P0300 random misfire. Dealer said IGM is bad. I will be replacing that but I will run through this process to see if I can see this in person.

  • @jayleishow1805
    @jayleishow1805 5 ปีที่แล้ว +1

    The best video to do with the problem hands down thank you

  • @rondoschiavoni8840
    @rondoschiavoni8840 5 ปีที่แล้ว +2

    I have seen by replacing just one bad coil is the fix however so many say that all the coil packs should be changed is this not true?

  • @thatdirtymichiganmusician1038
    @thatdirtymichiganmusician1038 5 ปีที่แล้ว +16

    Got zapped real bad when trying this. I was even wearing gloves but apparently my fingers were a better ground😂

    • @aileenwagner2576
      @aileenwagner2576 3 ปีที่แล้ว +4

      Thank u, will definitely do something not to get shocked!

    • @Dastardly_X
      @Dastardly_X 2 ปีที่แล้ว +1

      I use double insulated spark plug pliers 🌟

  • @larryk8537
    @larryk8537 10 ปีที่แล้ว +2

    Clear and concise explanation. Thanks!

  • @100american2
    @100american2 6 ปีที่แล้ว +3

    I know mechanics are hating TH-cam lol thanks for the very detailed video sir!

  • @ronaldlehmann6935
    @ronaldlehmann6935 5 ปีที่แล้ว +1

    Very good information- u made it easy to follow -Thank you

  • @derricknash8993
    @derricknash8993 4 ปีที่แล้ว +1

    Man good frickin job explaining that I have 98 lumina Chevrolet having exact issues misfire after time up

  • @lostjalopygarage8150
    @lostjalopygarage8150 5 ปีที่แล้ว +1

    Excellent video! Just what I needed to know.

  • @iamasmurf1122
    @iamasmurf1122 5 ปีที่แล้ว +9

    What you do to test the leads is you “pop one off “ while your assistant turns the engine over you put one end in your mouth . If you die it means the leads are good 🤣

  • @loukujawski1370
    @loukujawski1370 3 ปีที่แล้ว +1

    I'm curious...what does it mean if when you remove one spark plug wire (#6) and the GM 3.8l just dies?

  • @enriquecantu3582
    @enriquecantu3582 6 ปีที่แล้ว +3

    Dude, I comment you, great video. My car ran rough in the AM but after work no start. After pumping gas it started but was running rough. No spark at coil pack 3/6 but spark at other coils. Thought for sure a bad coil pack, i bought and installed...wrong. After seeing your video I believe my problem will be the ignition module. Left car at work will purchase module in the AM. I am really hoping this is my problem..will keep you posted...you all.

    • @2226phoenix
      @2226phoenix 6 ปีที่แล้ว +1

      Did it work?

    • @chriss1227
      @chriss1227 3 ปีที่แล้ว

      @@2226phoenix legend has it he died when following the OP advice when testing his new ICM.

  • @ACAllen-zp1cq
    @ACAllen-zp1cq 4 ปีที่แล้ว +2

    So can bad coils keep the car from starting? I'm getting gas, just won't run.

  • @dwaineanderson9008
    @dwaineanderson9008 7 ปีที่แล้ว +1

    Great Job of explaining, this will save me some bucks!!

  • @davidjames666
    @davidjames666 4 ปีที่แล้ว +4

    good thing my pacemaker didn’t get fried. when i removed the wire it zapped me and knocked me down. the paramedics said when i split my head open from the fall, the jolt restarted my heart. otherwise good camera work on your film here

  • @kevinbelport4926
    @kevinbelport4926 7 ปีที่แล้ว +2

    outstanding explanation. I was trying to find the Anatomy of the coil packs also. great job on that as well.

  • @aileenwagner2576
    @aileenwagner2576 3 ปีที่แล้ว

    Thank u for the tips. Will b doing this tomorrow.

  • @jludtxs
    @jludtxs 3 ปีที่แล้ว

    I'm trying to change the throttle position sensor. It's such a tight space I managed to break off part of the screw. Any ideas how to get better access? I'm sure the car won't run right if it only is mounted with 1 screw. I am going to use screws with heads for wrenches, The screws were really hard to get to.

  • @theSword-
    @theSword- 2 ปีที่แล้ว

    I have 2 cars with the v6 3.8l, and I replaced all 6 of the bolts that hold the coils down with hex-head bolts.

  • @TylersNeighborhoodGarage
    @TylersNeighborhoodGarage 11 ปีที่แล้ว +9

    Good video, but the substance you want to apply to the module is heat sink compound, not dielectric grease. I made the same mistake nearly.
    Heat sink compound transfers heat away from the module, which gets surprisingly hot in use. Dielectric grease seals and prevents electricity transfer, and does not transfer heat. I get my heat sink compound from Radio Shack.

    • @chadportenga7858
      @chadportenga7858 8 ปีที่แล้ว +4

      Now that The Shack is closed, you can get it at AutoZone. It's called Thermal Compound (or Paste) at AZ...

  • @Dastardly_X
    @Dastardly_X 2 ปีที่แล้ว

    What if one side of a coil sparks weaker ?

  • @arak17iv77
    @arak17iv77 4 ปีที่แล้ว +1

    Thank you for sharing it helps

  • @kittyfanatic1980
    @kittyfanatic1980 7 ปีที่แล้ว +3

    Exactly. You MUST USE THERMAL COMPOUND between the module and mounting bracket. If you do not you will most likely burn out the replacement icm. Having some white compound on hand(i prefer the gamer compound thats grey its dirt cheap on amazon and ebay and wish) is much cheaper than blowing a 100 dollar plus module.

    • @deanhauser6626
      @deanhauser6626 6 ปีที่แล้ว +5

      why doesn't the factory have compound between. My 02 Regal had 140 K before ICM went bad, no compound between, completely dry

  • @EdwardSmith-y4j
    @EdwardSmith-y4j 11 หลายเดือนก่อน

    I used a powdered timing light clipped it on spark plug wires,4 flashed and 2 did not get

  • @charlesdowns1691
    @charlesdowns1691 3 ปีที่แล้ว

    is ac delco recomended for these cars?

  • @AS768
    @AS768 7 ปีที่แล้ว +3

    This really helps, thank you!

  • @dboystatus2963
    @dboystatus2963 8 ปีที่แล้ว +1

    i have a 97 buick lesabre i bout 3 coils and at the same spot the 1 coil is not working but it started acting right again then now its doing the same thing

  • @vickyhernandez9510
    @vickyhernandez9510 10 ปีที่แล้ว +2

    Thanks I will attempt to fix ignition module today on 92 lesabre

  • @Rome7869
    @Rome7869 8 ปีที่แล้ว +5

    Spite it not having a balancing shaft, the 3-3 is an awesome engine.

    • @Jayy-op5up
      @Jayy-op5up 6 ปีที่แล้ว +1

      rome seveneightsixnine it has a balancer pulley

  • @kevinbelport4926
    @kevinbelport4926 7 ปีที่แล้ว +3

    onward to my v6 Camaro.

  • @MrCllaw
    @MrCllaw 6 ปีที่แล้ว +1

    Great vid. Very informative, clear and concise. Bravo!

  • @donny-ho1bm
    @donny-ho1bm 4 ปีที่แล้ว

    Ive got the same problem..only all 3..crank the motor an held each coil..not one zap..

  • @bentebbens
    @bentebbens 7 ปีที่แล้ว +1

    Great job!

  • @dirtyred9376
    @dirtyred9376 5 ปีที่แล้ว +1

    So what if u have no power when u turn the key forward no dash lights nothing. I've changed the fuel pump relay, ignition switch and the tumbler nothing. 3800 oldsmobile 98.

    • @blackiechong4344
      @blackiechong4344 4 ปีที่แล้ว +1

      dead battery

    • @dirtyred9376
      @dirtyred9376 4 ปีที่แล้ว +1

      @@blackiechong4344 kmsl na open circuit homie. A dead battery want give u lights horn etc. Stuck to your day job.

    • @aileenwagner2576
      @aileenwagner2576 3 ปีที่แล้ว

      I have the same car! I would check the battery first.

  • @tamekaterrell1625
    @tamekaterrell1625 5 ปีที่แล้ว +1

    Can you give a video on fire system on this car i need know order wire go in on coil pack.

  • @miomine3527
    @miomine3527 4 ปีที่แล้ว +3

    If you replace, buy an original oem ignition control module. After market ones failed on me twice.

    • @herbnalis3723
      @herbnalis3723 2 ปีที่แล้ว

      There are 2 kinds of replacement parts. Replacement & used car dealer replacement parts. Used car dealer replacement parts don't last & are built for price not longevity.

  • @gregoryblair9810
    @gregoryblair9810 4 ปีที่แล้ว +1

    Note...disconnecting battery will reset radio. If you have one with code it's better to spend 25 bucks for a cheap reader and clear/erase codes with that. Radio presets may clear and trip meter. Odometer will stay, but zero's out trips.

  • @MyFlinch
    @MyFlinch 3 ปีที่แล้ว

    Just went through this with my 05 LeSabre. Only thing I would add is, after you find the non-functioning coil pack, take them all off and put them in different positions, put the plug wires back on correctly, never mind the now wrong numbers on the coil packs. Then recheck. If the same position coil pack is "dead", then you know that aint it. Would have saved me 38.00! I even swapped some plug wires to make sure that wasn't it. So, new plugs (should have seen the old ones, rotten!!!!), one unnecessary coil pack, and one module, I'm in business!! Now about that dieelectric grease, didn't have or use any. Think I'll have a problem?

    • @chriss1227
      @chriss1227 3 ปีที่แล้ว

      Might shorten the life of your ICM.

  • @bones020694
    @bones020694 7 ปีที่แล้ว +1

    very helpful info!

  • @savagenomore
    @savagenomore 11 ปีที่แล้ว +9

    man I got the mess knocked outta me doing this, had a bad cracked boot and it got me....lol..

    • @thatdirtymichiganmusician1038
      @thatdirtymichiganmusician1038 5 ปีที่แล้ว +2

      savagenomore I tried to do what he did but I got a spark that jumped to my finger and wooooooo was that a rush.

    • @jaylina9112
      @jaylina9112 4 ปีที่แล้ว +2

      Haha happened to my brother in law 😂

  • @carterdreyer2655
    @carterdreyer2655 3 ปีที่แล้ว

    Just fixed my camaro. I'm a happy guy

  • @VileMisanthropy
    @VileMisanthropy 4 ปีที่แล้ว

    Old school. Nice

  • @charlesdowns1691
    @charlesdowns1691 3 ปีที่แล้ว

    good video

  • @coffeefish
    @coffeefish 11 ปีที่แล้ว +1

    Good stuff. Nice engine.

  • @LUISUTRERA-lk8qm
    @LUISUTRERA-lk8qm 9 หลายเดือนก่อน

    Como la traduzco en español

  • @tccoop6558
    @tccoop6558 7 ปีที่แล้ว +1

    Damn good video, thanks alot!

  • @deanhauser6626
    @deanhauser6626 6 ปีที่แล้ว +8

    shouldn't you be using plug wire pliers so you dont get zapped? I would

    • @herbnalis3723
      @herbnalis3723 2 ปีที่แล้ว

      Wear dishwashing rubber gloves.

  • @derricknash8993
    @derricknash8993 4 ปีที่แล้ว +1

    I need help

  • @moedallas3815
    @moedallas3815 7 ปีที่แล้ว +1

    thank you!

  • @jomamareyes6528
    @jomamareyes6528 8 ปีที่แล้ว +1

    thank you

  • @davidwinfrey3307
    @davidwinfrey3307 4 ปีที่แล้ว +1

    Use thermal grease not what he said that will burn up the module

  • @craig1974
    @craig1974  11 ปีที่แล้ว +1

    Yeah i thought of having a spare one of those around too lol.

  • @dominiques2762
    @dominiques2762 5 ปีที่แล้ว +1

    123 246?

  • @JamesKinniburgh-e3e
    @JamesKinniburgh-e3e 10 หลายเดือนก่อน

    You need to use heat sink grease

  • @richardresendez2325
    @richardresendez2325 ปีที่แล้ว

    Thank u

  • @markmillers4491
    @markmillers4491 4 ปีที่แล้ว +1

    If you get shocked doing this you will run to find a rubber glove to wear. Lol

  • @BullyGovJ4F7775
    @BullyGovJ4F7775 6 ปีที่แล้ว +2

    You never showed what the dead coil looks like.

    • @yungrico4012
      @yungrico4012 5 ปีที่แล้ว +1

      u have to test it by pulling off the plugs if spark then its good no spark not good

  • @jesseyrodriguez7020
    @jesseyrodriguez7020 8 ปีที่แล้ว +1

    I din't want to know your l problem. first the coil packs I need to know the # on each of them.so I know how to put each wires on the right coil like the coil at the radator is it 2 at the right of the coil 5 at the bottom of that coil.U left me guessing.

    • @chadportenga7858
      @chadportenga7858 8 ปีที่แล้ว +2

      They are in pairs. 1&4, 2&5, 3&6. The ignition control module fires BOTH plugs on any particular coil together (often referred to as "waste spark" - you can google it if you are interested in a detailed explanation).
      So you could reverse the wires on the same coil without issue, but do NOT mix wires from 2 different coils. Different model cars may have the coils in different orders, depending on how they fit in the engine compartment, so it is best to look up the order of the coils online.

    • @kittyfanatic1980
      @kittyfanatic1980 7 ปีที่แล้ว +2

      Thats why you pull the wires one by one and mark them. The original coilpacks take the guesswork out if they are not moved. Just mark the new coils appropriately with white out.

  • @jeffmorris7222
    @jeffmorris7222 10 หลายเดือนก่อน

    Good way to get the crap knocked out of you be careful lot of amps there been hit before.

  • @craig1974
    @craig1974  11 ปีที่แล้ว +1

    Its not a pleasant feeling i know!

  • @savagenomore
    @savagenomore 11 ปีที่แล้ว +2

    nope...

  • @charlesdowns1691
    @charlesdowns1691 3 ปีที่แล้ว

    5.5 mm

  • @jesseyrodriguez7020
    @jesseyrodriguez7020 8 ปีที่แล้ว +1

    u say 1pack fires 2 cyl 2 4 6 then U say 1 2 3 2 4 6

  • @charlesdowns1691
    @charlesdowns1691 3 ปีที่แล้ว

    i have a code eraser

  • @craig1974
    @craig1974  11 ปีที่แล้ว +1

    i just bought some from ebay. probably cheaper

    • @chaseww
      @chaseww 4 ปีที่แล้ว +1

      Most of the crap you buy for your car on eBay is made in crappy crap crap China. It's junk that's why it's so cheap you get what you pay for most of the time I'm not saying if you go to your local AutoZone or Advance Auto cuz they mostly sell China s*** to. It's all f****** cheap and it's all cheap crap. But we let those people sell us those cheap crap in this country because of the big businesses used to make a lot of money. Now since Trump did the tariffs on China they're getting us back. And if you don't know that this virus is man-made well then you're idiot absolutely idiots if you don't think that this virus is man-made

  • @hardyb311
    @hardyb311 9 ปีที่แล้ว +1

    Why do i get shocked everytime

  • @charlesdowns1691
    @charlesdowns1691 3 ปีที่แล้ว

    but youre not wearing gloves+ lol+ safety #1)

  • @delcorick9967
    @delcorick9967 3 ปีที่แล้ว

    I'm real sorry but you seriously shouldn't ever remove a wire while idling 2 diagnose ignition miss because you can seriously get shocked if there's a wire strand,, use noid light or test light, mann I hat watchn people do that, its quicker but dumb at same time,, use your head be careful

  • @zackarywest8568
    @zackarywest8568 7 ปีที่แล้ว +1

    not much of a diag video.

    • @bugbomb8048
      @bugbomb8048 7 ปีที่แล้ว +2

      Zackary West .....can I watch you video on the subject?.....that's what I thought.......shut up!