1997 Buick Lesabre

1997 BUICK LESABRE
190,000 MILES • 6 CYL • 2WD • AUTOMATIC
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DAVIDB87
  • MEMBER
  • 1 POST
my 1997 buick lesabre will start up fine and run fine for a while but out of knowhere it will start chugging like its misfiring and wont go pass the 2 idle... then while its doing that i mash the gas and the idle drops all the way and cuts off..... somtimes when i mash the gas it wont cut off but act like its choking up
Feb 10, 2010 at 6:33 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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RASMATAZ
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 75,992 POSTS
Inspect and test all the following listed below:

Oxygen sensor
Catalytic converter
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)
Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Cap and rotor

Note:If it doesn't apply disregard.
Feb 10, 2010 at 6:39 PM
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