anther check engine light [Archive] - GrandAmGT.com Forum

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Metallman56
09-15-2005, 04:58 PM
i have a 01 gt. when i put the other guys headers and borla exhaust on my car the check engine light came on after about 2 weeks. code was a bad o2 sencer, the one before the cat. i replaced the senser the light went off after a day or two, than came back on after about a month. it has been going on and off for a couple of months now. its on right now, and i havent gotten it checked out yet. when i do i will let you guys know. any way i was wondering what would make it turn off when i have done nothing to fix it? shouldnt it stay on all the time, untill the pcm doesnt detect a problem?

freakydeaky
09-15-2005, 09:13 PM
have them check the exhaust convertor

CUSTOMGAGT2000SEDAN
09-18-2005, 08:57 PM
my check engine light was caused by a hole in gas filler neck pipe