1997 CHEVY CAVALIER ENGINE CODE P0674

  • Tiny
  • Aaronotto79
  • 1997 CHEVROLET CAVALIER

Engine Performance problem
1997 Chevy Cavalier 4 cyl Front Wheel Drive Manual 146000 miles

my 97 z24 has been acting up for the last week. It stalls when shifting and does it whenever. Today it stalled a lot and also didn't idle good and I got the engine code PO674, which is glow plug circuit: cylinder 4.

my question: I have changed the plugs, boots and ignition coils, inspected the cover, is there something else I could replace to fix this problem? Asap, my daily driver! Thank you

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Tuesday, November 9th, 2010 AT 5:32 PM

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  • Tiny
  • Service Writer
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PO674
Is this a typo?

PO304 maybe?

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Tuesday, November 9th, 2010 AT 6:42 PM
  • Tiny
  • Aaronotto79
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No it came up as P0674, which I found out is a cylinder 4 misfire. A mechanic said change the plastic casing that holds the ignition coils, because perhaps a spark would be firing out the side of it. What do you think?

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Wednesday, November 10th, 2010 AT 6:16 AM
  • Tiny
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I haven't heard of that code and a cyl 4 misfire is a po304. That I do know.

I would check compression on that cylinder. IF good I would swap the #3 and #4 injectors and see if the miss moves.

A housing is certainly possible, but more often gives a multiple misfire code ( po300)

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Wednesday, November 10th, 2010 AT 5:06 PM

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