1989 Chevy Celebrity Fuel

Tiny
JESS2KIDS
  • MEMBER
  • 1989 CHEVROLET CELEBRITY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 83,000 MILES
I replaced fuel filter, o2 sensor, fuel pump good, and did tune up. I get horrible gas milage and dont know why? Also chugs all the time.
Friday, July 9th, 2010 AT 8:08 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective 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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Friday, July 9th, 2010 AT 9:30 PM

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