Pulsating

2003 FORD FOCUS
100,000 MILES • 4 CYL
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GOSHENIA
  • MEMBER
  • 1 POST
what causes your car to pulsate when pressing down on the gas...only going away once the car is warmed up. Ford Focus...2003...what kind of price am I looking at to repair this?
Apr 9, 2011 at 6:24 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Dunno the costs it varies with location could be one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
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 it and keep testing

Apr 9, 2011 at 9:37 AM
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