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need help diagnosing 510 ecu swap 200

posted by  88 760GLE on  Sat Nov 26 03:18 CST 2005
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84 245gl.

original ecu:
poor low end response from engine, otherwise runs ok. cannot set mixture with the led test light (very dimly lit, always on).

replacement ebay ecu (guaranteed):
i plugged it in and the car started ok, for about 5 seconds. then the idle reved up to ~3000 rpm. it stays there for as long as i care to watch it do that. if i give it gas it will die down for a second and then hits the high revs again.

my question:

is this replacement ecu bad, or is it telling me that some sensor is freaked/something is out of adjustment?






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New need help diagnosing 510 ecu swap [200]
posted by  88 760GLE  on Sat Nov 26 03:18 CST 2005 >


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