2001 Chevy Monte Carlo hesitation on acceleration

Tiny
MAC36
  • MEMBER
  • 2001 CHEVROLET MONTE CARLO
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 111,000 MILES
The car is hesitating on acceleration
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Wednesday, August 26th, 2009 AT 6:54 PM

1 Reply

Tiny
RASMATAZ
  • MEMBER
Oxygen sensor
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, August 26th, 2009 AT 7:05 PM

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