Outback idle and accelerate

Tiny
PHILR.
  • MEMBER
  • 2001 SUBARU OUTBACK
  • 4 CYL
  • 4WD
  • 119,589 MILES
Two things please: took 2001 outback in for 120kcheck. Only problem was high idle with foot on brake. Mechanic told me not to be concerned. More important, transmission shifted just fine but mechanic drained fluid &added new. Now on occasion it seems to have a hesitation when engaging gas pedal from stop light.
Sunday, January 16th, 2011 AT 1:31 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be caused by 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.
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 it
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Sunday, January 16th, 2011 AT 1:42 AM

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