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more intermittent running problems 700 1991

i changed the ecu today and the new ecu (937) seems to run fine so i'll see if it happens again.

the old ecu had the following numbers on it, 5003787-8 and 3517370-7. I am assuming that thsi is the original 563 (1991). seems they had some weird running problems.

when this problem is not happening the car runs really great.

as it never throws codes and turning it off and then back on 20 seconds later makes it okay i am really hoping its the ecu. i would think if it were a sensor, or a short it would at least throw a code.






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