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2000 Buick Lesabre chugs and dies

Tiny
KATHYMESS
  • MEMBER
  • 2000 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
Car chugs and dies while driving around town. Highway does better, still some chugging. Engine light came on one time, however went out before I could get to repair shop!

have repaired the following:
new spark plugs
one new sensor (don't remember name $35.00)
new air filter
intake manifold
new head gasket (no damage done to heads)

a friend of family repaired the above for $700.00
I can not afford this guessing game! None of the above was the problem.
please help
thank you
kathy
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Saturday, February 20th, 2010 AT 12:40 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 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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Saturday, February 20th, 2010 AT 5:52 PM

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