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notMyScreenName notMyScreenName is offline
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Join Date: Nov 2010
Posts: 108
If the fuel pump worked without using the jumper - by just turning the key - that's good. I'll have to look at the schematic for the '84 be completely sure (I will, and I'll post back if I'm wrong... and if no one else does first) but at this point (since the key worked) I see no reason to use the jumper. The fuel pump is energized by a signal from the DME to the DME relay so if tuning the key produces fuel flow then the DME relay should be working correctly. (Switching the key to like the third position (I think) energizes one of the two relays in the DME relay and powers the DME, then when the correct conditions are met the (now powered) DME causes the DME relay to close the other relay in it and provides power to the fuel pump (and depending on model some other stuff too)).

Last edited by notMyScreenName; 11-15-2014 at 02:51 PM..
Old 11-15-2014, 12:55 PM
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