Car misfiring?
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Joined: Jul 1999
Posts: 3,647
From: Winnipeg, Manitoba, Canada
Car misfiring?
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.
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