PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

ignition coil 7 control circuit?

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Old Oct 12, 2008 | 09:04 PM
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Default ignition coil 7 control circuit?

This code popped up yesterday and I'm not sure where to start, has anyone had any of these coil codes pop up? Thanks.
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Old Oct 13, 2008 | 01:52 PM
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Yep, in fact I have Coil G (7) and Coil H (8) circuit malfunctions. Been chasing this one for over a month. Thinking I might have a bum ECU
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Old Oct 13, 2008 | 07:05 PM
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Well, I unplugged my battery and took out the pcm, cleaned everything and checked everything over. Put it back in and rode around for a half hour scanning for codes with hp tuners and it never came back. I hope it's gone but I really didn't see anything out of ordinary. I'll cross my fingers.
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Old Oct 13, 2008 | 07:34 PM
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i had the p0357 pop up off and on for a year then the p0358 showed up recently. I would clear them and no problems. Then one day it just went to **** and started missing. Unplugged battery, retuned, you name it. I think the PCM just got toasted and the associated drivers are weak.
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Old Oct 18, 2008 | 05:45 PM
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yep. it's back, now what? I didn't find anything wrong in the harness, do I need a new pcm?
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Old Oct 19, 2008 | 03:32 PM
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Anyone have some idea how to diagnose this or is it usually a junk pcm?
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Old Oct 20, 2008 | 10:11 AM
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If you guys need a spare ecm set to your vin, just give me a call, i have them in stock and can ship them out same day. 1999 - 2004 ecms are usually $85 shipped.
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Old Nov 29, 2008 | 04:30 PM
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So I think its gone, I swapped the entire coil rack from side to side and it seems gone. I think my problem is my drivers side ground wire on the back of the head is very short pulling on the harness quite hard, I am going to make it a little longer, it broke when doing heads/cam and I just put a new connector on it. It was pulling very hard on the coil pack harness.
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Old Dec 1, 2008 | 02:21 AM
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Originally Posted by andy670ho
So I think its gone, I swapped the entire coil rack from side to side and it seems gone. I think my problem is my drivers side ground wire on the back of the head is very short pulling on the harness quite hard, I am going to make it a little longer, it broke when doing heads/cam and I just put a new connector on it. It was pulling very hard on the coil pack harness.
that sounds like a good place to start LOL
i had a bad coil pack harness some how on my car. dont now how it happened. i swicth out the old one and it went away. crazy things happen
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