1997 Chevy Cavalier Engine Code P0674

1997 CHEVROLET CAVALIER
146,000 MILES • 4 CYL • FWD • MANUAL
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AARONOTTO79
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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
Nov 9, 2010 at 5:32 PM
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SERVICE WRITER
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PO674
Is this a typo?

PO304 maybe?
Nov 9, 2010 at 6:42 PM
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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?
Nov 10, 2010 at 6:16 AM
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SERVICE WRITER
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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)
Nov 10, 2010 at 5:06 PM