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Backfiring, won't idle, misfire...what to check?

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Old 10-28-2008, 05:36 PM
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Default Backfiring, won't idle, misfire...what to check?

Trying to get my car running for the first time here.

Won't start without the throttle depressed.
Pops loud once started if I let off the throttle or go past 3500rpm.
Was popping on driver side, swapped sides with coil packs and it seems the popping switched sides with it.
Tried replacing the coil I thought was bad and it continues.
No codes other than misfire codes, but even those have stopped coming up now even though the engine sounds like it's missing.

Where can I go from here?
I have a full shop and snap on scanner.
Old 10-28-2008, 05:56 PM
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Checked them all with a timing light, the middle 2 coils on the pass side have intermittent dead spots, and one of those is a brand new out of the box coil.

Where can I go from here? I'm out of ideas.
Old 10-29-2008, 12:20 PM
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anyone have a clue? there are a couple other people having the same issue and I have not found anyone who solved it yet

someone said I should try a IAC relearn to see if it will idle then
Old 10-30-2008, 10:46 AM
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Problem was faulty coil pack harness in case anyone finds this with a search.




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