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Injectors shutting off intermittently 700 1990

posted by  porkface on  Mon Sep 29 09:51 CST 2014
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last visit: Fri Oct 24 09:12 CST 2014
[RELATED]

you first need to figure what is quitting-power or ground.

if it's power, then it's the relays you mentioned. there's also a ground behind the lh headlight for the rs relay. had that 1 stall a car when the high beams came on.

has the head been off? had a 740t that the dealer pulled the head and trapped the wire from the relay to the rs relay and would cut power off on hard accel. replace the wire and all was better.

if it's ground, the it's the ecu inputs missing or the ecu itself. just replaced an ecu on an lh 2.2 for that. pin 13 would quit when all else was good.

make sure the throttle sw is ok, it will command injectors off when it's closed at idle.

the melted fuse concerns me, never seen that before. shouldn't be that high an amperage draw. good luck, chuck.






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