94 Cutlass Supreme 3.4 DOHC Backfireing
fstilts
02-13-2006, 10:32 AM
The car is having a strange problem. Seems when the car reaches a certian
Tempature it backfires and runs rough. Mostly on Idle. But after I drive for a few min. It goes away and the car runs fine. Never happens when the car is cold
I have been scratching my head on this one. I hooked up a scanner but there wasn't any code:banghead: Anybody have any Idea's
Frank,
Tempature it backfires and runs rough. Mostly on Idle. But after I drive for a few min. It goes away and the car runs fine. Never happens when the car is cold
I have been scratching my head on this one. I hooked up a scanner but there wasn't any code:banghead: Anybody have any Idea's
Frank,
Manny_boy
02-16-2006, 07:44 PM
Could be your coolant temperature sensor read by the ecm (the one behind the rear head, that screws into the lower intake). If its bad and it keeps the ecm in open loop as though it were already warm, instead of closed loop at startup, might cause you an issue or two... (just a thought) :2cents:
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