1990 Pontiac Grand Am LE 2.5L Misfire, Back fire
This car only seems to act up when the ambiant temp is close to 80 or higher. Car will backfire on acceleration and seems to misfire on accel sometimes. Customer states problem started after getting fuel but fuel sampple looks and smells good. We decarboned en...
FIX posted 3/20/2009
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Vehicle Data1990 Pontiac Grand Am LE
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Message Closed w/FIX
Vehicle Data
1990 Pontiac Grand Am LE
VIN | 1G2NE14U5L |
Engine | 2.5 L / 4 cyl / GAS |
Trans | 3-speed Automatic |
Delivery | FI / TBI |
Emissions | OBD1 US Fed emission |
Symptoms | Misfire, Back Fire |
Occurs | Hot, Under Load, on Accel, After a Hot Soak |