1994 Chevy Camaro backfire

SKULLIFIED

MEMBER
1994 CHEVROLET CAMARO
V8
2WD
MANUAL
75,000 MILES

Ok I had my car scanned for codes and a MAF problem came up. So they shop replaced the MAF sensor and now the car doesn't fall flat on its face. With that being said I still have a backfire. It is really bad on a cold start, but as the car warms there is less of a backfire. There is no pattern to tell when it will backfire. Plugs and wires are less than a year old, I have a brand new coil in as well. The injectors and oxygen sensors are still original. I also have replaced the fuel filter about 1 year ago. I also have rough idle and sometimes when I drive the RPM gauge will jump around

Saturday, June 26th, 2010 AT 4:00 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator, fuel filter or weak fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.

Was this

answer

helpful?

Yes

No

Sunday, June 27th, 2010 AT 3:46 AM