2005 Chevy Aveo car dies or hesitates

Tiny
RICKR
  • MEMBER
  • 2005 CHEVROLET AVEO
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 49,500 MILES
When I am stopped and I go to accelerate the car hesitates or it just dies.
Wednesday, April 8th, 2009 AT 10:24 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Possible Causes of Engine Hesitation

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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Thursday, April 9th, 2009 AT 3:52 AM

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