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Surges sometimes

Tiny
BIGTOM1503
  • MEMBER
  • 1999 FORD WINDSTAR
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 93,260 MILES
1999 ford windstar sometimes surges more when its wet or cool outside it seems like it does it more at around 1200 to 1800 rpms and around 40 mph and other days at 25 mph and some days it runs fine.
Friday, March 18th, 2011 AT 11:32 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light and when was last tune-up?

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.
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.
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Friday, March 18th, 2011 AT 11:51 PM

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