1991 OLDSMOBILE IT IDLES RUFF

  • Tiny
  • troup family
  • 1991 Oldsmobile

Shakes or Wobbles problem
1991 Other Oldsmobile Models 4 cyl Two Wheel Drive Automatic

Just asking to see if I got a vacume leak, or sparkplug problems, or a fuel filter going out

Wednesday, July 7th, 2010 AT 7:49 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

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.

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Thursday, July 8th, 2010 AT 12:23 AM

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