Mechanics

HESITATE

1995 Oldsmobile Achieva

Engine Performance problem
1995 Oldsmobile Achieva 4 cyl Front Wheel Drive Automatic 195000 miles

when I first take off in my car it hessitates wat could it be?
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Connerer99
January 11, 2010.



Check and test the following below: Oygen 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)

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
Cap and Rotor

Note: If it doesn't apply, disregard.

Rasmataz
Jan 11, 2010.