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1999 Chevy Monte Carlo Car hesitates and stalls out while d

Tiny
RAVENJACK
  • MEMBER
  • 1999 CHEVROLET MONTE CARLO
Engine Performance problem
1999 Chevy Monte Carlo 6 cyl Automatic 108, 00 miles

Hello,

I just had a tune up last week- new plugs, cables, and had one coil replaced. A few days later while driving the RPMs started going up and down and the car was hesitiating. This problem has become increasingly worse and is now stalling out sometimes while accelerating. While idling it seems to be ok. What could this be?
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Friday, May 21st, 2010 AT 2:35 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below.

Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
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Friday, May 21st, 2010 AT 10:47 PM

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