Question about 2002 Chevrolet TrailBlazer

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I've got a 02 Chevy trailblazer that the engine revs up really high and will accelerate by itself up to 55 or 60 mph what causes that

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  • 359 Answers

The previous owner used to be a real driver and the Blazer missis him.

Posted on Apr 12, 2015

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 30 Answers

SOURCE: 2002 Chevy Trailblazer Engine Codes

This is actually an easy swap out. Remove the electrical connection, remove the retaining bolt and pull out old one. I believe the sensor is located in the front passenger side of the engine on this particular model.

Posted on Aug 16, 2008

emissionwiz
  • 74945 Answers

SOURCE: engine missing and smoking 2006 chevy trailblazer.

a clogged fuel injector will cause a miss but no engine damage,

Posted on Nov 07, 2008

  • 345 Answers

SOURCE: engine revs itself when sat idle

bet it failed on lambda reading...........sounds like you got an air leak somewhere ! or could be an idle control valve problem,have you had it plugged into any diagnostic equipment yet ?

Posted on Nov 24, 2008

  • 1 Answer

SOURCE: Engine revs up to 3000-4000 rpm all by itself

THERE IS A TEMPERATURE SENSOR ON MOTOR WHICH CAUSES THIS PROBLEM... USUALLY IT SHOWS A NEGATIVE TEMP READING WHICH CONFUSES THE COMPUTER CAUSING IT TO REV UP....HAVE THE ENGINE DIAGNOSED ON A SCANNER....GOOD LUCK...

Posted on May 25, 2009

jturcotte
  • 7704 Answers

SOURCE: I have an 02 Chevy Trailblazer & the Service

Rough idle can be caused by dirt in throttle body or EGR system, but there are many other possibilities. The service engine light indicates the computer has detected a fault. If you can get a free scan at your local parts chain and post the trouble codes to us we can give you more specific repair recommendations.

Posted on Oct 28, 2010

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Engine revs up to 3000-4000 rpm all by itself


THERE IS A TEMPERATURE SENSOR ON MOTOR WHICH CAUSES THIS PROBLEM... USUALLY IT SHOWS A NEGATIVE TEMP READING WHICH CONFUSES THE COMPUTER CAUSING IT TO REV UP....HAVE THE ENGINE DIAGNOSED ON A SCANNER....GOOD LUCK...

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