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1990 Pontiac Grand Prix LE 3.1L Backfires
Posted to GM Driveability on 2/5/2002 10 Replies

hello all this one has no codes but on cold start it backfires like crazy but finnaly will start, I'm thinking that the timing chain needs to be replaced what are your thoughts ?

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  Related Documents & Media  1990 Pontiac Grand Prix LE

 
Message Closed w/FIX

car Vehicle Data

1990 Pontiac Grand Prix LE

VIN 1G2WJ14T5L
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / multi port f.i.
SymptomsBackfires
OccursCold
Message Closed w/FIX

car Vehicle Data

1990 Pontiac Grand Prix LE

VIN 1G2WJ14T5L
Engine3.1 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / multi port f.i.
SymptomsBackfires
OccursCold