SERVICE ENGINE CODES

  • Tiny
  • lenster
  • 1997 Oldsmobile Cutlass
  • 224,000 miles

I get to codes my check engine light flashing codes that come up is P0300
and P1654. I know that p0300 is a radom misfire I checked and changed all my spark plugs which were pretty worn out and checked spark plug wires and spark. The car was running rough idle and since I changed the plugs it made it run a lot better and now I can't clear this code. Could the tempture sensor have anything do about this or the oxygen sensor.

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Thursday, October 27th, 2011 AT 11:55 PM

3 Replies

  • Tiny
  • hmac300
  • Expert
  • 44,418 posts

1654 is an a/c relay problem. Check for a blown fuse thenif not that have apro look at this.

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Friday, October 28th, 2011 AT 12:17 AM
  • Tiny
  • lenster
  • Member

What does the a/c relay need to do about the engine light flashing and running and it now runs better since I replaced the plugs and fuel fiter.

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Friday, October 28th, 2011 AT 1:44 AM
  • Tiny
  • hmac300
  • Expert
  • 44,418 posts

You asked what code p1654 was and that was it. The service engine light doesn't only go on because of engine problems.

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Friday, October 28th, 2011 AT 1:59 PM

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