Fuel pump issues, no power to pump Options

[Tab914]

Hello all,

Well took the teener out today to start my summer driving. Charged the battery and car started on first cranks. Let the car run for a bit, turned it off and turned it back on. Pulled out of the garage and took pictures to get a new insurance policy and let the car sit for half an hour.

Here is where the fun begins. Go to start the car to put it back in the garage and......nothing. Don't hear the fuel pump buzz when I turn the key. Push the car back in the garage and start testing.

The car is a 1974, 2.0lt d-jet.

Direct power to the pump shows that pump works.
Jumping the relay shows that power from the relay board will reach pump.
When pump is running while jumping the relay, the car cranks but won't start.
Then, when checking the main power relay, looks like I am getting no power to the relay board.
Swaped out the computer (brain) for another and still no power to the relay board.
Tried jumping the wires at the relay under the passenger seat and still nothing.


Been going over and over the electrical diagrams and getting nowhere.
Got tired and can't think anymore.

Very frustrating after having the car start right off the first crank.

Is there something simple I am not thinking of?

Thanks in advance to whoever can help. Appreciate all answers / suggestions.

Will check tomorrow after a nights sleep.

Cheers,
Dominic. (IMG:style_emoticons/default/beer3.gif)

[Dave_Darling]

A couple of resources for you--

Text troubleshooting article:
http://web.archive.org/web/20050218100647/...t/fuelpump.html

Flowcharts for troubleshooting:
http://members.rennlist.com/pbanders/FPChecklist.htm

--DD