Fuel delivery problem

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May 28, 2004 | 03:30 PM

oldsledder62

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Fuel delivery problem

I have an 86 Bronco II that will not start. I used to be able to here the fuel system pressurize, but this is not the case any longer. I have tested the external and the internal fuel pumps, they work. I also tried testing for power going to each pump. In both cases there was no power being delivered to the pumps. The fueses are fine. What other areas should I check for problems.

Thanks
Mike

May 28, 2004 | 10:56 PM

FSC

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From: Alaska

Check the fuel pump relay and the enertia switch, power flows from the relay through the enertia switch to the fuel pump.

May 28, 2004 | 11:10 PM

Toyvo

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The common fault is the fuel pump relay. The enertia (roll over or auto shut down ) relay is also a concern. But dont forget to check for a good ground for the pumps.

May 29, 2004 | 07:03 AM

stuwiley

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This happened to me not too long ago, it turned out to be the relay,its an easy fix.I got a handful of them at the local junkyard.I keep them in the truck,just in case...

May 29, 2004 | 12:39 PM

oldsledder62

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I have check the inertia switch. It is ok.

Where is the Fuel Pump Relay located. What does it look like? How do I determine if it is bad.

Thanks
Mike

Quote:

Originally Posted by oldsledder62

May 29, 2004 | 02:36 PM

87 XLT

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Joined: Oct 2003

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From: SoCal

Front to back on passenger side fender well it's starter relay/EGR solenoid/EGR valve/MAP sensor/fuel pump relay. This is for my 87 Ranger, yours is probably the same.

Last edited by 87 XLT; May 29, 2004 at 02:39 PM.

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