Catilac converter

Tiny
SNAVLEYCOLTIN
  • MEMBER
  • 1993 PONTIAC FIREBIRD
  • 2WD
  • AUTOMATIC
  • 140,000,000 MILES
My 1993 firebird wont accel over 35 to 40 mph what could it be because of.I bought it off a friend they last said it would just boggg down at like 40 after it has ben warmed up. A mechanic said that it was the caltilac converter. It is supposly plugged. Is that even close?
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Friday, February 11th, 2011 AT 2:41 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light on?

Lack of acceleration, chugging, hesitating********, bogging, misfiring etc. Could be caused by one of the following below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
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 it and keep testing.
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Friday, March 18th, 2011 AT 12:13 AM

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