Missing and stalling

Tiny
CRAIGSMICHAEL
  • MEMBER
  • 2001 BUICK LESABRE
  • 6 CYL
  • 200,197 MILES
My 2001 buick lesabre misses under acceleration. Sometimes the engine even dies. It definitely gets worse in the rain or even when its damp or very humid. Sometimes when it misses the tach stops working. Ive replaced plugs and plug wires already. Enter your question.
Tuesday, April 26th, 2011 AT 3:57 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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Tuesday, April 26th, 2011 AT 10:38 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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Tuesday, April 26th, 2011 AT 10:39 AM
Tiny
DAVE'S BIG BACKYARD!
  • MECHANIC
  • 262 POSTS
That thing needs a crank sensor.
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Wednesday, April 27th, 2011 AT 3:05 AM

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