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2000 Isuzu Rodeo Question missfire

Tiny
BILLS5413
  • MEMBER
  • 2000 ISUZU RODEO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 111,982 MILES
I have 3 codes from my obd2 reader
#1 p0300
#2 p1133
#3 p0131
I have replaced the spark plugs, all the coils, the mass air flow, the egr valve air filter, both converters and muffler
its reading mutipul missfire detected, controlled fuel mettering and 02 sensor low volts bank 1 sensor 1

missfire at low rpm and at stop and sometimes while driving, what can I do next? It's driving me crazy
Thanks, Mr Confused
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Thursday, May 6th, 2010 AT 11:38 AM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Since both o2 sensors are switching properly and it has a miss, I would lean towards a vacuum leak somewhere, as long as the engine has good compression. Try carefully spraying around theintake area with carb cleaner with engine idling. If you spray aleak, the idle quality will change. Check where the upper and lower intake mate as well as all vacuum lines. Could be a bad injector, but be sure no vacuum leaks first
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Saturday, May 8th, 2010 AT 8:50 AM
Tiny
BILLS5413
  • MEMBER
  • 2 POSTS
Guy's I found that the mass airflow sensor was bad, and the I got a reading that 1 o2 senors was bad, there was no vacuum leak, I think you should do more research before you give advise on driveablity problems, thanks anyway.

Thanks. Bill
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Wednesday, May 12th, 2010 AT 8:02 AM
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Vacuum leaks are more common than MAF sensors and dont cost anything to repair, but thanks for the advice
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Wednesday, May 12th, 2010 AT 8:06 AM

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