sumble stutter miss fire
#1
Junior Member
Thread Starter
Join Date: Jul 2007
Location: ThreeHills Alberta
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
sumble stutter miss fire
i have 1993 bonn ssei just put new motor gm when motor is hot at highway speed
you kick it down will no tgo over 3 - 3200 rpm you also get what feels like a miss
thunk thunk feel every thing has benn tested new plugs wires most sensors could the super chager cause any of these car had 335000 kil supercharger seems fine but i would like to recon if i can find kit in canada
you kick it down will no tgo over 3 - 3200 rpm you also get what feels like a miss
thunk thunk feel every thing has benn tested new plugs wires most sensors could the super chager cause any of these car had 335000 kil supercharger seems fine but i would like to recon if i can find kit in canada
#4
Junior Member
Posts like a Ricer Type-R
If by testing the ICM, you mean taking it in and having it tested at a store, forget it. Bad test good, and good test bad. It'* a no-win proposition.
Check your coils for starters using the procedure in Techinfo. If an ICM is bad, chances are you'll have a check engine light. But the PCM can't even see the coils.
Check your coils for starters using the procedure in Techinfo. If an ICM is bad, chances are you'll have a check engine light. But the PCM can't even see the coils.
#6
Junior Member
Thread Starter
Join Date: Jul 2007
Location: ThreeHills Alberta
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Thanks guys iwish this were the problem 1 no cat 2 new coils 3new ing modual4new maf sensor when engine cold has lots of power will red line but once i hit 180 it starts
but thanks for all the help i owe you guys
but thanks for all the help i owe you guys
#8
Senior Member
Certified GM nut
Join Date: May 2005
Location: Wickliffe, Ohio
Posts: 2,155
Likes: 0
Received 0 Likes
on
0 Posts
If you can get your hands on a set of coils from another 3800 swap those on. Go for a drive and see if your problem still arises when the engine temps increase. I have heard of coils OHMing out good but once heated up be the cause of rough idle or missing.
Ed
Ed
#9
Junior Member
Thread Starter
Join Date: Jul 2007
Location: ThreeHills Alberta
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
yes i have replaced it and no it does not sound stupid but thanks anyway i have
just found out i have 15 psi back presure in exhaust so anyone have good idea for
better sytem and thanks for all the ideas i will show picts asap car is currenty running
325 hp thanks to GM preformance mods and if i replace stock exhaust syst mabey more
just found out i have 15 psi back presure in exhaust so anyone have good idea for
better sytem and thanks for all the ideas i will show picts asap car is currenty running
325 hp thanks to GM preformance mods and if i replace stock exhaust syst mabey more