Duration 10:23

2004 GRAND PRIX MISFIRE MYSTERY

by BoostedLuke

15 376 watched

156

Published 15 Feb 2021

READ READ READ SUBSCRIBE TODAY 2004 GRAND PRIX 3800 Series 3 Is having some misfiring issues. Cleaned up the ICM, tested coils and cleaned the ignition ground. ____________________ Song - Tea Time by Ofshane

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Cars

Automotive

Vlog

Comments - 57

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@s7uidz8 months ago Pro tip, put heatsink compound on the bottom of the icm or it will fry out again on a 110 degree day. The metal thing it attaches to is a heatsink, therefore . ...Expand 1
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@spencertheroux900511 months ago I had the exact same issue on my 2008 grand prix. For the longest time i could not find the issue. I changed: spark plugs, wires, coils, ignition module, . ...Expand 2
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@user-ng5fg6lh2d4 months ago Ive been having the same issue with my 07 grand prix for 6 months now, i initially thought it was transmission shudder but im chasing a misfire now.
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@davidfrank66667 months ago Best part was the back round music 1- nice and quiet 2- the music good choice.
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@Brian-fo8shlast year Electronics parts cleaner and some dielectric grease to insulate the wires and ground. Coat that wire loom that connects to the icm with dielectric grease to insulate.
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@SuperSportfan13 years ago I just changed my buick gs ignition coil module and fixed the misfire. Definitely recommend changing it. 3
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@headpainter17 months ago I' ve got the buick 3. 8 series 3. Which i have heard a great motors unless you get a lemon, and i have latched onto a lemon. This thing has a cyl 4 cylinder 4 is the one with the miss.
while doing the last compression check i got the normal 150 lb that i always get,
but the second time engine cranked, it started running and i checked the gauge with it running and compression was bouncing between 20-25 psi.
a sluggish valve? What would cause compression to be lost at higher rpms but not cranking rpms? Lifter? Sticking valve? Gremlins?. ...Expand
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@lowk3yolast year Same issue on my step sons car 08 gp. Cylinder 5. I' ve never said i hated a 3800 until now. Plugs, plug wires, injectors still. I' ve tried 2 other icms, swapped packs around. I' m beyond lost.
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@davidkuhrt36572 years ago You would have benefited using a scanner that monitors each cylinder for misfires. If it' s one cylinder compared to multiple cylinder misfire make diagnosing so much less complicated. 2
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@luiscamargo779last year I had the same issue on my 08 grand prix all i did while it' s on is one by one unplug a spark wire from the coil and see if it sparks
if 1 and if that still didn' t work
thenswap out your ignorance module. ...Expand
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@concretechef99042 years ago I replace the coil brain and mine fired up still runs rough i think its fuel pump now. Stalls out while idled down at lights and stop and go traffic replace air sensors. 1
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@fordsman77312 years ago I' m replacing the injectors and sparkplugs mine has a miss aswell i' m also getting my timing done. 2
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@Ry77x2 years ago I have my work car 90 olds 88 and runs decent but has same issues. Misfire, engine light, sporadic stalls, ive thrown parts at it and still no luck. Im no mechanic at all)
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@dylano72426 months ago 3800 misfire causes
1. Ignition control module
2. Bad coil packs
3. Intak
4. Spark plug wires
5. Vacuum leaks from worn hoses
6. Stuck or bad lifter- caused by if you arent changing oil every 3-5k miles. Long oil changes intervals =have crud oil and oil sludge
these engines are extremely easy to work on and to maintain. Their problems are from lazy owners not doing maintenance. ...Expand
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@ohbillytv1792 years ago You have to use an even coat of " heat sink grease" on the back of that icm or it will fail prematurely. 1
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@RoseForOnlyHer3 years ago I had one and it was a spark plug so i changed all of them. 4
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@kevinduder72372 years ago check and dry your passenger front vss pigtail mine got wet and the car about went to junk yard= cleaned dried and purchased new pigtail - cleaning actually worked re-connected wires worked! got spare in glove box didnt need new but should do. o-ring prob needs new on connector vss. trust
cheers .. ...Expand
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@adamlaird52075 months ago Did you figure it out? I' m having the exact same issue.
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@Jesusloves19714 months ago I have a 19 grand prix and i have the same problems! I have replaced everything and cannot find why this car wants to run like crap!
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@calvindirkmaat3 years ago Nice regal i need a clean one, i have one right now for off roading.
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@ellafindsout9403 years ago Have the same issue but my cat is hollowed out. My fuel pressure is good. I jus can' t figure it out. 1
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@AFatherToTheFatherless5 months ago You want to see 50-80 ohms. Not 5. Set multimeter to 20k ohms setting.
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@fordmustang98guy3 years ago The door chime sounded funny when you turned the car on i know why thats because your girlfriends grand prix has an aftermarket radio.
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@jlb71252 years ago Spark plug wires not connected fully causes shutter at idle. Reconnect all the wires again. 1
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@unkowntrooper16572 years ago Should have taken off the coils from the ice first woukd been easier.
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@christianohms66723 years ago What? Gm with issues? No way, never. Lol. 3
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@pitdawg64182 years ago Never fix acar. Cause she is not a permanent attachment to you. And when you find out she' s got her fkboy that does nothing your over here having headaches for 6 months chasing her car problems while mr. Fkboy is nice and comfortable not getting dirty and in between her hoohaw. ...Expand 3
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@tristanlaster80563 years ago My brother has one there is a sensor connected to the gas pedal which you would have to get a new gas pedal prevents the car from making power.
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@s7uidz8 months ago Pro tip, put heatsink compound on the bottom of the icm or it will fry out again on a 110 degree day. The metal thing it attaches to is a heatsink, therefore . ...Expand 1
@

@spencertheroux900511 months ago I had the exact same issue on my 2008 grand prix. For the longest time i could not find the issue. I changed: spark plugs, wires, coils, ignition module, . ...Expand 2
@

@headpainter17 months ago I' ve got the buick 3. 8 series 3. Which i have heard a great motors unless you get a lemon, and i have latched onto a lemon. This thing has a cyl 4 cylinder 4 is the one with the miss.
while doing the last compression check i got the normal 150 lb that i always get,
but the second time engine cranked, it started running and i checked the gauge with it running and compression was bouncing between 20-25 psi.
a sluggish valve? What would cause compression to be lost at higher rpms but not cranking rpms? Lifter? Sticking valve? Gremlins?. ...Expand
@

@luiscamargo779last year I had the same issue on my 08 grand prix all i did while it' s on is one by one unplug a spark wire from the coil and see if it sparks
if 1 and if that still didn' t work
thenswap out your ignorance module. ...Expand
@

@dylano72426 months ago 3800 misfire causes
1. Ignition control module
2. Bad coil packs
3. Intak
4. Spark plug wires
5. Vacuum leaks from worn hoses
6. Stuck or bad lifter- caused by if you arent changing oil every 3-5k miles. Long oil changes intervals =have crud oil and oil sludge
these engines are extremely easy to work on and to maintain. Their problems are from lazy owners not doing maintenance. ...Expand
@

@kevinduder72372 years ago check and dry your passenger front vss pigtail mine got wet and the car about went to junk yard= cleaned dried and purchased new pigtail - cleaning actually worked re-connected wires worked! got spare in glove box didnt need new but should do. o-ring prob needs new on connector vss. trust
cheers .. ...Expand
@

@pitdawg64182 years ago Never fix acar. Cause she is not a permanent attachment to you. And when you find out she' s got her fkboy that does nothing your over here having headaches for 6 months chasing her car problems while mr. Fkboy is nice and comfortable not getting dirty and in between her hoohaw. ...Expand 3