Ok, here we go! This is where things are now.
After all of that work at Jim's Imported Car Care, my car's would not start at all and it was totally done in. The car was towed to a strictly volvo repair shop, and found:
a: Ground and harness lines fried.
b: dashboard wiring toasted.
c: seems electrical system just dusted the bed.

What I need an opinion on is what I think could have happened from the first mechanic which I might be taking legal action? I am a computer engineer.
Is it possible that while Jim's Imported was taking out the various boards,(ie: ECT, Fuel pump relay)that by him not disconnecting the computer before doing all of this, that by him putting this replaced items back that it would cause all these areas to fry? I know that, that is the case with computers I work on, I beleive this to be the same thing that happened with my car. The electrical system was toasted in various parts especially back by the firewall.
All items was repaired at a cost of $306 but the car still runs rich. Any ideas on a cure or thought on why the car's fuel is running rich?

Michael B

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90' 740 GLE 16v 242k miles 'Nikie'

If the harness was fried by the prior mechanic, then you clearly have a cause for legal action. The 1990 cars are NOT subject to wiring harness degradation: this is highly unusual. Something they did caused massive electrical problems. Why they took it apart is beyond me.

What were the original symptoms prompting all the work?

When these cars run rich, it is almost always a faulty O2 sensor, so that might have been effected too, or maybe something in the computer gone faulty so that it interprets the O2 signal incorrectly, but as an historian, I think'll end my thinking out loud there..

George
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1987 745 GLE Turbodiesel Intercooler (D24TIC/M46) 190k and 1988 745 Turbo Intercooler (B230FT/M46) 290k