OK, after posting about 2 weeks ago about my 740 running very rich, belching black smoke, etc. I had a suggestion to look at the engine coolant sensor. Found this site
Kirk
They would be talking about the pin numbers on the connection to the fuel control unit. If you remove the electrical connector from the control unit, then remove the connector's outer shell (you need to cut a wire tie, move a boot and undo a small screw), you'll see pin numbers. Do not probe the front side of the connector, test leads can bend the terminals and then you end up with more problems than you started with. Also, make sure that the info on the brickboard applies to your car, and not some other one with a different fuel system.
Is this the ECU at the passenger side foot well or is there another controller somewhere? Thanks for the continued help, I need it.
Kirk
Yes, that's where it is. (Also there's an ignition control unit located above the kick panel over the driver's feet.)
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