Gripenfelter
03-30-2004, 11:30 PM
My wife has a 97 GTP with a supercharged 3.8L V6.
Its slowly been developing a shudder under WOT and surge at idle.
I changed the plugs and went 2 steps colder on the plug because someone told I should go colder because I have a smaller pulley for the blower. I checked the gap as well.
The surging got worse after the colder plugs. ARGH!!
I changed the O2 sensor. No difference.
Anyway of testing the coils without buying a new one?
What else could it be?
Car doesn't throw any codes but gets bad fuel economy.
Its slowly been developing a shudder under WOT and surge at idle.
I changed the plugs and went 2 steps colder on the plug because someone told I should go colder because I have a smaller pulley for the blower. I checked the gap as well.
The surging got worse after the colder plugs. ARGH!!
I changed the O2 sensor. No difference.
Anyway of testing the coils without buying a new one?
What else could it be?
Car doesn't throw any codes but gets bad fuel economy.