Question about 1997 Chevrolet Astro

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Service engine soon light flashing after tune up on 1997 chevy astro

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

tripletauto
  • 1450 Answers

SOURCE: 2003 Chevy Trail blazer says service engin soon?

you have a trouble code stored. This means the pcm has detected a problem somewhere

Posted on Aug 25, 2008

autodr
  • 260 Answers

SOURCE: 99 chevy silverado service engine soon light is flashing when driving

you have to read out the codes. po300 is misfire detected. maybe a coil or injector. could also be intake leak

Posted on Nov 15, 2008

  • 7353 Answers

SOURCE: po452 trouble code changed sensor engine light

you may have to drive it several days for the light to go off, or have the codes cleared. personally I would just drive it. if the computer tests it, and it passes the test, it will go off on its own.

Posted on Sep 21, 2009

autotherapis
  • 501 Answers

SOURCE: Service engine soon light is flashing

When the light comes on without flashing, it just means an emissions problem, when it starts to flash it has become more serious. I suspect that there was an error putting the plugs and or wires. That computer can determine if there is a misfire and it will put out a P040X, code where X represents which cylinder is the problem. This will help you not have to take each one apart. If there are more than one, check each number.

Ex. P0401 means there is misfire on cylinder number 1

P0400 is a random misfire detected.

If you take it to an Advance or Autozone they will usually scan if for free.

By the way, if you used cheap plugs instead of platinum plugs that could do it too.

Hope this helps.

Posted on Nov 25, 2009

  • 1311 Answers

SOURCE: 2004 chevy trailblazer-Reduce engine power

You need to get the fault codes read to determine where the problem is that set the SES light. Autozone will scan your car at no charge. At some point you will need to get a mechanic involved to further diagnose the codes.

Posted on Sep 25, 2010

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1 Answer

2003 chevy trailblazer service engine soon light


If the service engine soon light is flashing, it means the computer has detected an engine misfire with the potential of catalytic convertor failure. Don't just tune it up. Bring it somewhere they can read the trouble code. Sometimes it will designate which cylinder is having the problem.

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1 Answer

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Has the 'Check Engine' light come on? I had this problem at 30,000 miles and the trouble codes set were transmission component slipping. Ultimately required replacement of the transmission.

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