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arrivederci arrivederci is offline
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Join Date: Oct 1998
Location: Denver, CO
Posts: 1,335
Quote:
Originally Posted by DW SD View Post
Just a thought:

The pump doesn't power up until the engine is cranking (and DME sees pulses from the crank position sensor). This is a safety feature. Are you testing it this way?

I wired my pump through the fuse box and any time I needed to prime, I'd just add a jumper to the terminal lug at the fuse box.



Doug

The engine cranks and I still don't get power to the pump. My pump power comes directly from the Timmins dme harness. So I am tracing back to the factory dme harness to ensure I have things wired correctly there. Also will be testing the dme relay in the various states (ignition on, cranking, etc). I have tested the pump itself with 12v power and it works fine. Timmins said that the crank sensor isn't that picky and as long as it sends any pulse, the dme should engage the fuel pump.

My engine harness came without the 14pin connectors attached, so I have mapped wire colors to the 14 pin plugs with the diagrams above. The problem is that I am missing one green/black wire so I know something is amiss. Timmins says that the wires I need are identical between the 55 pin and 88 pin harnesses but I'm still unable to explain the fact that I can't get things to match up.

Which leaves me wanting to see the wiring colors from the 88 pin to verify what I am working with. That's where I think the most obvious problem could be.
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Old 06-25-2014, 07:34 AM
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