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1991 Geo Storm Missing at Steady speeds

Tiny
WIZZY319
  • MEMBER
  • 1991 GEO STORM
  • 4 CYL
  • FWD
  • MANUAL
  • 131,000 MILES
While I am driving at any steady speed my car misses if accelarate it does not when I decelarate it doesn't miss.
Friday, July 2nd, 2010 AT 8:56 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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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Saturday, July 3rd, 2010 AT 8:23 AM
Tiny
WIZZY319
  • MEMBER
  • 2 POSTS
I was leaning more towards o2 sensor. Can you tell me more symptoms of bad o2? My car seems to only do it when it warms up.
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Saturday, July 3rd, 2010 AT 5:11 PM

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