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1995 Buick Lesabre Car hesitates and cuts-outs when driving

Tiny
HOPEM
  • MEMBER
  • 1995 BUICK LESABRE
Electrical problem
1995 Buick Lesabre 6 cyl Automatic 119* miles

The car only does it when it heats up. Had it diagnosed unsuccessfully. I have replaced fuel pump, fuel filter, fuel pressure regulator, plugs, wires, and ignition control module. I was thinking maybe the Mas air flow sensor but the mechanic said he doubted that was it. Also was thinking maybe the ECM because the mechanic said it wouldn't produce data, but he didn't say it was bad. I could really use some help from anyone who might have had this problem or has heard of this.
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Monday, September 13th, 2010 AT 12:35 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lack of acceleration, chugging, hesitating, jerking, 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.
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 it.
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Monday, September 13th, 2010 AT 5:23 PM

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