Mechanics

ROUGH IDLE

1997 Ford Ranger

Engine Performance problem
1997 Ford Ranger 6 cyl Two Wheel Drive Manual 180000 miles

my 97 Ranger has a rough idle, idles slow then races up a bit then slows again
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Kent1959
July 17, 2010.




Engine running rough or misfiring can be cause by the following: 1. Defective spark plug
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
10. Throttle position sensor.
11. Idle air control valve.

Tiny
Rasmataz
Jul 17, 2010.


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