94 explorer no start

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May 25, 2013 | 01:34 AM

redneckbronco80

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Joined: May 2009

Posts: 27

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From: Edmonton

94 explorer no start

Really got a brain scratcher here

All right heres the skinny on my issue

turn on the ignition and got no fuel pump noise (was driving it an hour before to the car wash so i could wash the engine bay to repair an oil leak)

check the relay and swaped with a new one still nothin

cant read the codes cleand the connector...... tried again still nothin

check the EEC relay ..... good

back to the fuel pump relay socket jumped the pins fuel pump turns on and truck starts

have a signal power for the relay and a supply power

Question : does the pcm control the ground circuit to activate the relay ?
:and does anyone have a wiring diagam to confirm this ?

Really scratchin my head without a diagram...... little help thanks

May 25, 2013 | 10:23 AM

explorerjwd

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Joined: Jan 2005

Posts: 75

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From: Titusville, FL

Don't know if this will help, I have referred to this info a few times.

ford eec iv

May 27, 2013 | 10:27 PM

shorod

Logistics Pro

Joined: Jun 2009

Posts: 4,820

Likes: 83

From: Cedar Rapids, IA

Yes, per the factory wiring diagram for the 1994 Explorer, the PCM provides a ground to the fuel pump relay via pin 22 at the PCM.

-Rod

May 28, 2013 | 12:13 PM

redhawkssh44

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Joined: Feb 2005

Posts: 424

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From: Puyallup WA.

You may have tripped the fuel pump cutoff switch. It turns off the fuel pump if you have an accident and should be located near the jack in the back.

May 28, 2013 | 10:07 PM

shorod

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Joined: Jun 2009

Posts: 4,820

Likes: 83

From: Cedar Rapids, IA

The inertia cutoff switch is between the fuel pump relay and the fuel pump. If providing a ground to the fuel pump relays gets the fuel pump running, the inertia cutoff is in the normal operating "closed" position.

-Rod