rudevr6

ok, no noise at fuel pump while starting or with ignition on, ok fine, must be DME, got my new DME started right up. next day no start, no fuel pump noise.

now i jump wired the fuel pump and it runs, so did i get a bad DME? i bought the cheaper one from german auto parts, did i do wrong?

Rogue_Ant

Did you try replacing the relay? Also, the FP is on the O2 sensor circuit, so check that fuse as well...

rudevr6

ok, call me stupid, i thought the DME was the fuel pump relay...

p2ii

The DME relay is inside of the fuse box under the hood. The diagram is under the fuse box cover.

rudevr6

where is there a fuse box under the hood on an 84 na?

rudevr6

nobody?

AKCJ

Your original post didn't have many details (like the model year).

Anyway, I'm pretty sure your 84 would have a fuse panel setup similar to my 83. If so the fuse panel (or panels) is under the dash on the drivers side. On mine the DME/Fuel pump relay is plugged in at the top of the main fuse panel.

So, there's one relay called a DME/Fuel Pump relay at the main fuse panel.

The DME is the ECU and on my car it's right near the steering column.

From your posts I'm not clear if you changed the relay (cheap) or the entire DME (not cheap). It's common for the relay to go bad and it's a good idea to carry a spare.

One more thing - check out Clarks Garage. Lot's of info.

HTH

rudevr6

found it! i stupidly pulled all of the wires from the rear of the car while prepping for paint, turns out that the ground for the fuel pump is on the tail light wiring harness.

so i put the groung back down, and viola!

thx for the input tho--- i did check clarks and bypassed the alarm system and checked the dme