PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

possible bad PCM?

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Old Sep 18, 2014 | 08:40 AM
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Default possible bad PCM?

OK so a while back I bough the EJM327 OBD2 Bluetooth dongle to read data. Mostly sensor stuff. Well I pulled it to pull codes on a friends car the other night, and as I went to jump into my car to start it after putting new oil into it. It wouldn't start. Temp gauge showed 260 and nothing else was working. No milage no volts no fuel, fuel pump wasn't priming at all nothing not even an SES light. Only lights on were "check gauges" and "brake" for obvious e-brake. I have checked all fuses, I even disconnected the batter over night. Only to be greated with the same issue. I plugged in the obd2 dongle to try and get something out of the PCM and everything came on, car started and drove just fine. I come home and as its running I pull the dongle out and everything shuts off. I try to start and all it does is crank. Could my PCM be dying? I'm still running a 98' PCM
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Old Sep 18, 2014 | 09:14 AM
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Its a broke ground wire on the back of the drivers head.
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Old Sep 18, 2014 | 09:32 AM
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Originally Posted by LSX Power Tuning
Its a broke ground wire on the back of the drivers head.
Already checked those. All nice and tight
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Old Sep 18, 2014 | 09:34 AM
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Issue: http://youtu.be/vFkyDhqF4nI
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Old Sep 18, 2014 | 11:18 AM
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When your plugging into the ODB2 its completing the ground. Every time I have ever seen this is person its been a broken ground wire, usually on the head.
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Old Sep 19, 2014 | 01:46 PM
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Originally Posted by LSX Power Tuning
When your plugging into the ODB2 its completing the ground. Every time I have ever seen this is person its been a broken ground wire, usually on the head.
I will double check it. Thanks guys
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Old Feb 8, 2015 | 07:01 PM
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That must have been it ? I have never seen that before but stumbled on this searching for answers on my own obd ii issue.

OP please verify the conclusion to end this thread for others like me.
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