ENGINE CUTTING OUT ON ACCELERATION

1998 Buick Lesabre

Tiny

khollowell

June, 12, 2009 AT 6:57 PM

Engine Performance problem
1998 Buick Lesabre 6 cyl Front Wheel Drive Automatic 183000 miles

My LeSabre has 183,000 miles without any trouble. Now, as I begin to accelerate, it has begun to 'cut out'. This seems most apparent when going up hills. However, I did notice today it was idling rough at stop lights. Time for a tune up?

FOUND 24447 RELATED QUESTIONS

Cj Stalling When Idling

33 ANSWERS
50 IMAGES

Stalling Out

43 ANSWERS
52 IMAGES

1 Answer

Tiny

rasmataz

June, 13, 2009 AT 3:48 PM

Could be time for a tune-up

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)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include: Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

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