Where is Diagnostic port actually supposed to be grounded?

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Apr 11, 2006 | 06:50 AM

99whitews6

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From: Minnesota

Where is Diagnostic port actually supposed to be grounded?

I have been having MAJOR ground offset issues with my LC-1. My Hptuners serial EIO just went south so I am upgrading to the MPVI EIO. I removed all engine wiring over winter for the 408 install and I wonder if I didnt replace the Main/PCM ground in the wrong place.

What ground cable does the diagnostic port(EIO uses this I believe) use for its ground? Also, could someone who has not moved this ground please look at where it is attached to the car and let me know?!

Thanks all.

Apr 11, 2006 | 12:40 PM