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Thread: run in "start" but not in "run"
10-11-2009 06:47 PM #1
run in "start" but not in "run"
I let my 1982 733i sit for a few months starting her up every week or so, but this morning when I went to put her in winter storage, she wouldn't start. Well, she will start but not run.
She will start up just fine and purr along until I disengage the starter motor. then she will run for a few moments and die. I have checked all connections that I can think of, and the engine will not run at all when the 2 sensors from the flywheel are disengaged.
The same symptoms are present when I disconnect the afm, and also when I disconnect the sensor at the flywheel on the front of the engine. (not sure what its called, but the wire goes directly to the diagnostic terminal.)
Any help or suggestions would be appreciated
Thanks in advance,
02-13-2010 10:43 AM #2
Re: run in start but not in run
The culprit turned out to be The ECU. It took $400 of trouble shooting to find it. The local bmw shop wanted $1200 to replace it, but I found a used one on ebay for less than 100 shipped.
for a 1982 733i The part number was 0-261-200-008.
I took it to the shop where my car was parked, plugged it in and she fired right up.
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