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Car keeps throwing codes for cylinder 7

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Old 09-01-2009, 01:30 AM
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Default Car keeps throwing codes for cylinder 7

I have a 2001 Trans AM WS6 and it keeps throwing the same code on cylinder 7. First I changed the spark plug and it drove fine for about 2 weeks then the same code showed so I got the ignition coil replaced along with all new ignition wires. Drove fine for about a month, now it's getting the same code once again.

Except now it's showing cylinder 7 and 4 are misfiring. It seems like now I'm just chasing this problem around and I don't know what's causing it. Any ideas?
Old 09-01-2009, 10:03 PM
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Check the compression on #7. It is notorious for broken ringlands....
Old 09-01-2009, 10:30 PM
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Leaky fuel injector(s) can cause that too.

Swap an injector with #7 and see if the code follows the #7 injector.

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