fuel pump HELP!!!!

[pokie825]

My fuel pump isn't working so i replaced it on my 98 GT. It still wont work i checked the fuses, also checked to see if i was getting power to my fuel pump and fuel shut off im not. I switched my relays around ford told me to check my pcm. Does any one know where my pcm is and how to go about checking it? Do any of you have any other ideas of how to go about fixing this problem?

 

[blown98gt]

it's in the trunk on the driver side under the carpet if i can remember correctly

 

[19mustang95]

the PCM is in the passenger side kick panel..

obvious question, but did you check the fuel cut-off switch in the trunk? it may also be your CCRM.

 

[Paul]

Did you check the inertia switch in the trunk?

 

[MustangChris]

the inertia switch can get triggered if you hit a pot hole hard enough. thats where i would start.

 

[pokie825]

Ya i checked the fuel shut off in the trunk its getting no power

 

[94-427]

the fuel pump relay [fan relay and ECM relay are all]the metal black box inside on right fender[look through hole next to air filter can see from under hood] will have 30 wires going to it and a bolt in the center of conector

 

[hlinar]

Same problem with my 98 GT. New pump, new relay module, and it Still stops when it wants.
Then wait at least 6 hrs and maybe it'll start.
Ford said to clean the connectors on the crankshaft position sensor.Says common problem
of getting dirty and shorting out on 98's
Don't replace, just clean the connectors. when i get done being pissed,
I'm going to try that...

 

[hlinar]

Same problem with my 98 GT. New pump, new relay module under right fender, and it Still stops when it wants.
Then wait at least 6 hrs and maybe it'll start.
Ford said to clean the connectors on the crankshaft position sensor.Says common problem
of getting dirty and shorting out on 98's
Don't replace, just clean the connectors. when i get done being pissed,
I'm going to try that...

 

[94-427]

I Have sean this problem be the ECM but I would haft to have the car when it was dead I an in south texas My team can fix your problem

 

[hlinar]

hey, 94-427, since I'm in Little Rock, and an8 hr tow would be cost prohibitive,
how would you test
the pcu/ecm under the passenger kick panel to see if it's bad?

 

[94-427]

U would need wiring Diagram E mail me I can provide[[email protected]]
U would be looking for a signal or lack of from ecm to Ralay control box

 

[pokie825]

I think i figured out the problem. There is 4 connections one has constant power one is a ground one turns on the relay so so the other one gets power to the pump. the one that turns on the relay has grounded itself.

 

[pokie825]

Thanks 94-427

 

[hlinar]

Glad to hear it, Pokie, 94-427 suggested the ignition switch on mine
I plan on getting to it this weekend.

If the switch ain't it , what colors are the 4 wires you're talking about?

 

[hlinar]

Nope, ignition switch is good, now where or what?