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Something else to try at the ECU 200 1988

uid 18083's pic
posted by  lucid on  Thu Jun 21 11:05 CST 2007
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

Hi Randy,

A stab in the dark here, after seeing you're using the Bentley ECU pin tests. Your test from pin 13 to fuel relay 87/2 showed continuity OK. I think all that means is a normal complete circuit for normal running. But if the ground side (between the injectors and pin 13) was shorted to ground somewhere, your 13 to 87/2 could still look OK, but the injectors would always be open as long as the Fuel relay was energized.

It's a long shot, but unplug all 4 injectors again and do a continuity test between pin 13 and ground—or pin 25, the ground used by the ECU to "fire" the injectors. There should be NO continuity.
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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