1994 Chevy Camaro backfire

Tiny
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

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

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