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1997 Chevy Cavalier Hesitation

Tiny
CARRAT
  • MEMBER
  • 1997 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 112,000 MILES
Noting some intermittent hesitation w. Pedal
usually when stopped and beginning to start
sometimes roar
then ok

need motor mounts and is due for spark plugs

also getting traction sensor light (R front Hub)


what are you thoughts?
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Sunday, June 28th, 2009 AT 6:17 PM

2 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
Maybe a brake caliper is hanging up on the right front.
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Sunday, June 28th, 2009 AT 6:24 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine hesistation could be caused by the following

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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Sunday, June 28th, 2009 AT 6:25 PM

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