1999 Ford Mustang idle

Tiny
LINDA OUSLEY
  • MEMBER
  • 1999 FORD MUSTANG
  • V8
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
Car drops rpms to about 500 when stopped car also bucks at about 40 mph through 55
Monday, June 21st, 2010 AT 7:47 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below:

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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Monday, June 21st, 2010 AT 10:05 PM

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