Quote:
Originally Posted by engatwork
Alright now I need help on this from the computer type folks. I have about come to the conclusion that the ecu (engine computer) is bad. Seems that the circuit that needs to go to ground is grounded through the Motronic unit. In further reading there is a circuit internal to the Motronic unit that is a relay controlled by the key switch (integral ignition power stage). Should I try to send this one out for rebuild or try to pick up a good used one on ebay? If it were a MB cruise control module I'd send it out for rebuild  which is what I'll probably do with this. |
Anything like an electronic control module is not something I would trust off ebay. If its just the problem you now describe, I would be inclined to just install a relay external to the unit to perform the earth switching. It would be far cheaper than a rebuild. But then I am not in your shoes to make the decision.
Good Luck getting it fixed !
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Grumpy Old Diesel Owners Club group
I no longer question authority, I annoy authority. More effect, less effort....
1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles 
1987 250td 160k miles English import 
2001 jeep turbo diesel 130k miles 
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving
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