Fuel pump not getting power

[92Dora]

i looked at everything i could think of relays fuses the inertia switch and the fuel pump still wont get any power...any suggestions...im desperate

 

[budwich]

the fuel pump gets it power from the fuel pump relay.... does the relay operate???? Looking at things, is like looking at a woman, she might look alright but when you get "down to it", she ain't no good. Get a meter and check for voltage at the fuel pump relay and leaving the relay.

 

[92Dora]

well i tried putting a new relay in...and sitll nothing

 

[92Dora]

this fuse doesnt get any power and i dont know what it goes to could it be linked to my problem

 

[budwich]

sorry can't help... owner manual ???? probably in the "right" direction.... remember the meter........

If you don't have a manual, try autozone, they have some info on repair "sheets".... I think there are fuse panel stuff.

edit: yep there are diagrams there.... remember your meter! check for voltage coming into the relay and check to see if it operates.... replacing it "blindly" is unlikely to help you.

 

[bluesman2333]

I suspect that the picture is under the dash? The fuel pump fuse and relay is in the power box under the hood on the '93 so I suppose it is on the '92 also. AZ does have a simple diagram on their web site at http://www.autozone.com/images/cds/gif/large/0900823d800ba9d4.gif

 

[DeRocha]

The fuel pump circuit will only get power (12v) while the engine rpm >0.. As such you will not see any voltage on on the circuit unless you get a helper to turn the engine over while you test for 12v. Pull back the carpet behind the glove box and find the fuel pump inertia switch (pictured below). Use a meter (or test light if thats all you have) and connect either wire of the switch to HOT, and then ground the meter to a suitable ground. Next turn the ignition key from off to run. This computer should energize the fuel pump circuit for 2 secs (after 2 secs the computer will detect no TAC pulse and kill power to the circuit). So you should see 12v at the meter for only 2 secs, or while the engine is cranking.. I hope this makes sense..

 

[92Dora]

i tried the inertia switch...with the test light on it...it didnt ger any juice...and my truck in a 93

 

[bluesman2333]

i tried the inertia switch...with the test light on it...it didnt ger any juice...and my truck in a 93

ah OK try this one then: http://www.autozone.com/images/cds/gif/large/0900823d800ba9dc.gif

 

[92Dora]

i have one of those im my haynes manual