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Need Help with 01 GP GT Stutter Video

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So I have been chasing down a stutter and it's getting to the point where swapping parts isn't cost effective anymore.

As stated in the video, I did new acdelco wires, new plugs, new throttle position sensor. I recently changed the fuel level sensor but not the whole fuel pump. I didn't do the fuel filter yet but I did buy one.

I also bought one new coil and tried it in all three positions. Next I am thinking ignition control module but I don't want to buy that blind since it's over 100 bux.

Any help is greatly appreciated.

2001 Pontiac Grand Prix GT Stutter: https://youtu.be/Ho-RV3Cgeh0
 


used icm's are cheap enough. most go for 20 bucks used around here. i cant hear it, but im sure you can feel it. ho wmany miles are on it?

does it feel real weak when you get on it? the cel ever flash when its floored? if so maybe the cats clogged up.
 


No cel at all. It has 85000 miles and had the cat replaced at around 60k with an aftermarket one, and it did trip the cel but we backed it out and it's been off. I guess it could be clogged but there's no smell or anything.
 
@bluemagic no luck maf unplugged and same result. Thanks though is there any easy ways to rule out other things?
 
could be the icm acting up on ya. or the wires to it maybe got damaged. is the ground for the icm hooked up? it bolts to the bracket there.
 
Scottydoggs said:
could be the icm acting up on ya. or the wires to it maybe got damaged. is the ground for the icm hooked up? it bolts to the bracket there.
Click to expand...
I will take a look. When I did the fuel level sensor I removed the relay for the fuel pump to relieve fuel pressure, so maybe I knocked something loose when removing the fuse panel cover? I'll check thanks.
 


you can check your fuel pressure, but it would run like piss or barely run if the pump was bad. misfires are ignition related most of the time.
 
I think at this point I will take it to my brother in laws shop, just hate having him swoop in and fix stuff I can't haha.
 


So just an update if anyone cares, under the advisement of the shop foreman at the honda dealer I work for, I removed the fuel rail and sprayed it and the fuel injectors with electronics cleaner. I put it back together and the stutter was gone. I sold the car a few days later so I was happy.
 
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