1994 Lexus ES 300 car shakes, hesitates, then cuts off whi

Tiny
ECOUNTRYE
  • MEMBER
  • 1994 LEXUS ES 300
Engine Performance problem
1994 Lexus ES 300 4 cyl Two Wheel Drive Automatic 219k miles

car hesitates, then cuts off while driving or at stop lights and signs. If I drive very lite on the gas I can drive briefly. I think I hear a little cracklin sound either under or in front of car.
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Wednesday, November 18th, 2009 AT 11:24 AM

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Tiny
RASMATAZ
  • EXPERT
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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Wednesday, November 18th, 2009 AT 5:07 PM

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