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Re: Please look 84 745i Won't start - CALLAN LOO (archive)
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Posted by Mike on November 05, 2000 at 20:42:42:

In Reply to: Please look 84 745i Won't start - CALLAN LOOK posted by ///ARI on November 05, 2000 at 15:59:34:

I had a no start problem on my 86 735i. I removed the passenger speaker panel. Part of the harness to the ECU included a 3 wire with plastic disconnect. The center green wire should get 12v and that goes to the ECU. Mine wasnt getting any voltage, I believe this wire is in line with the green wire behind ignition switch. I ran a seperate lead from near the ignition switch directly to wire by ECU, just spliced them onto existing wire, and seems to solve problem. Might be worth a try, if your car is similar.
The problem is that the fuel pump relay is NOT getting a ground signal. I understand the ground comes from the ECU. *AND* even when I jump a ground it still gets no spark. Coil has been checked -> Good I am Assuming that the ECU is bad but what else can it be?




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