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Sportwagon75 · 09-11-2008

Gene - I had the same problem with one of my 75 Mantas. There's an inline fuse holder near the fuse box that supplies power to the F/I. I discovered the contacts inside the fuse holder were severely corroded. I cleaned the contacts and the problem went away. I would also concur with Otto regarding good grounding lug connections. They're critical. If all else fails...go to the back of the purple 75 FSM supplement. If you've never used it before...there's a respectable troubleshooting guide there for the F/I.

09-11-2008	#10 (permalink)
Sportwagon75 Opel Addict Since 73 Join Date: Apr 2002 Location: Virginia Posts: 423	75 Factory Supplement Gene - I had the same problem with one of my 75 Mantas. There's an inline fuse holder near the fuse box that supplies power to the F/I. I discovered the contacts inside the fuse holder were severely corroded. I cleaned the contacts and the problem went away. I would also concur with Otto regarding good grounding lug connections. They're critical. If all else fails...go to the back of the purple 75 FSM supplement. If you've never used it before...there's a respectable troubleshooting guide there for the F/I. __________________ Scott D.