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how do i find power wier for fuel pump on 92 ford explorer

Sent to Car Experts February 15, 2006 8:43 p.m.

i have a 92 ford explorer and it won't start if i let it set for more than one day the battery goes dead so far this has hapend 3 times the first time i tryed to jump start it and the fuel pump did not work for a while but then started to work the second time it started right away when i jumped it and now the third time it turns over but the fuel pump is not working and i want to check power at pump there is power at the big fues under hood please help its my only vehicle

Optional Information:
1992 Ford explorer 4.0

Already Tried:
checked power at fues

Customer (name blocked for privacy)

Status: Closed Value: $8

Info Request
February 15, 2006 8:47 p.m. (3 minutes and 45 seconds later)

REPLIED to Info Request

Thanks for your question.

Are you using a fuel pressure gauge to know whether or not the fuel pump is working? Or are you just listening to it hum?

Thanks

__________________
FORD MOTOR COMPANY CAR AND POWERSTROKE SPECIALIST FOR OVER 16 YEARS. ASE MASTER SINCE 1991. CURRENTLY WORK AT A MAJOR FORD DEALERSHIP. GIVE ME YOUR FORD PRODUCT QUESTIONS, IF I HELPED, PLEASE HIT THE ACCEPT BUTTON. EXPERTS QUESTIONS ON FORDS WELCOMED

Fordanswerman -- Auto Service Technician -- 98% Positive Feedback on 263 Car Accepts
Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0

Reply
Sent February 15, 2006 8:58 p.m. (11 minutes and 12 seconds later)

just listing to it hum i always hear it and now there is nothing

Customer (name blocked for privacy)

Reply to Fordanswerman
Sent February 15, 2006 9:05 p.m. (6 minutes and 42 seconds later)

i just listen to it hum i always hear it before i stat it and now there is nothing

Customer (name blocked for privacy)

Answer
February 15, 2006 9:09 p.m. (4 minutes and 7 seconds later)

REPLIED

You may want to try to replace both the EEC relay and fuel pump relay in the power dist box. Try this and see if this fixed your problem.

Thanks

Fordanswerman -- Auto Service Technician -- 98% Positive Feedback on 263 Car Accepts
Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0

Reply to Fordanswerman
Sent February 15, 2006 9:22 p.m. (13 minutes and 19 seconds later)

I found the eec test box and grounded my test light and stuck it in one of the test leads and the pump turned on so i pulled it out and went in and turned the key and the pump turned on does this mean i have a ground problem

Customer (name blocked for privacy)

Answer
February 15, 2006 9:29 p.m. (6 minutes and 34 seconds later)

ACCEPTED

The reason I suggested to replace both relays is this.

The EEC relay turns on the computer, so the computer can ground the fuel pump relay and in turn, run the fuel pump. During the key up, the computer grounds the relay for about 3 seconds and then turns it off.

You can swap relays from another spot if you want to try this theory out. On the lid of the power dist box where the relays are, you can swap out the AC relay with the fuel pump relay and so forth. They are all the same relay.

Thanks

Fordanswerman -- Auto Service Technician -- 98% Positive Feedback on 263 Car Accepts
Ford Engine Master/Transmission Master/Chassis Master=Ford Senior Master also Diesel 7.3/6.0

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