chas:

As a check on control operations, consider switching in the known good ECU from the other car. If the EHA is not receiving the proper current idle will be difficult.

Its almost there Frank ,today I drove it around the block ,a peppey motor and a transmission that shifts like a dream .If I can reach a descent idle Ill put tags on her and drive it around abit next week.All fluids have been replaced and the maiden voyage is close to being realized.Ive been haunting the diesel threads on PeachParts for some 10 plus years ,chiming in on old diesel finds Ive picked up around the Houston area.In the search and find efforts I would come across a few which were parkers but I could always generally get a good indication on motor and transmission health before towing them off .The gassers cars are somewhat of a longer gamble but these two Cosworth examples have futurnately paid off with some effort and pain in the pocket book.

The last few days Ive had time to work the smaller items out of the car,a busted rearview mirror,Done.Blinkers and flashers working,Done after a few bulb replacements.The last one came out of the blue ,Started the car to let it warm up and learned an important lesson.The thermostat housing had a broken return nipple at the housing and radiator fluid was puking out.I quickly turned the car off.HOOD OPEN then start car.After a few roadblocks it now is legal and roadworthy ,a few positives today were that the a/c still has its charge and the electrical charging system passes once checked out again .A few more miles down the road and everything should clear up.A largely respected veteran MB tech once told me after I respectfully asked him,"why do these injection systems have so many issues".His reply was simple and to the point ,people park them ,they need to be driven.