explorer running rough

1998 FORD EXPLORER
239,000 MILES • 6 CYL • 4WD • AUTOMATIC
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JTRUCKN
  • MEMBER
  • 2 POSTS
my 1998 ford explorer , idles rough , stumbles on accelleration , and lacks take off power, once it gets going it s fine , any ideas where to start ? already checked for vacume leaks, bad gas , not the problem
Apr 10, 2011 at 8:03 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Do you have a check engine light on and when was the 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.
Apr 10, 2011 at 8:23 PM
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JTRUCKN
  • MEMBER
  • 2 POSTS
yes and i am going to run the codes , this just started all the sudden . wondered if it was a common problem thanks !!
Apr 10, 2011 at 8:52 PM
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