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1999 Nissan Quest MISSING

Tiny
R WHITENER
  • MEMBER
  • 1999 NISSAN QUEST
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 146,000 MILES
The motor fine 4 5 or 6 miles even if running at WOT starts skipping and gets worse for a mile or 2 until it will almost stop have removed catalic conv drove still same skip but now not quiet as bad checked fuel press app, 38 lb on idle 43 when idled up no codes on dash such as check eng. Un plugged MAF SENSOR to make sure light was wrking. Light works fine and code was correct.
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Thursday, July 22nd, 2010 AT 9:33 AM

1 Reply

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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Friday, July 23rd, 2010 AT 1:26 AM

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