HELP! No voltage to fuel pumps or inertia switch.

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Old 04-21-2003, 08:32 PM
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Question HELP! No voltage to fuel pumps or inertia switch.

85 F150 5.0 EFI - No voltage to fuel pumps or inertia switch.

There is voltage at the fuse, but none to or after the inertia switch, so, my pumps are not pumping!

Is there a relay for the fuel pumps?
Is it between the fuse and the inertia switch?
My wiring diagram shows a relay, but, I can't find it. Where is it located?

I'm in kind of a rush, my truck won't run and I go in for major knee reconstrucion surgery on Wednesday, so, I need to fix it tomorrow if possible!

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85 F150 4x4, Bal & BP 302, EFI, K&N air filter, Heddman headers, High-flow Cats, Custom side-exit exhaust, 4" Rancho lift, Rancho 9000 shocks, Rancho Torque Arms, 4.10:1 gears, Rear limited slip diff., 33" BFGs, Warn Winch, SnugTop.
 
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Old 04-22-2003, 12:21 AM
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HELP! No voltage to fuel pumps or inertia switch.

If I remember right about this year of truck.

The relay(Ground-out) is in the computer.
 
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Old 04-22-2003, 05:35 PM
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HELP! No voltage to fuel pumps or inertia switch.

Replaced the relay, and now my truck runs!

The fuel pump relay is attached on the passenger side of the computer, under the dash.

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85 F150 4x4, Bal & BP 302, EFI, K&N air filter, Heddman headers, High-flow Cats, Custom side-exit exhaust, 4" Rancho lift, Rancho 9000 shocks, Rancho Torque Arms, 4.10:1 gears, Rear limited slip diff., 33" BFGs, Warn Winch, SnugTop.
 
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Old 04-22-2003, 08:20 PM
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HELP! No voltage to fuel pumps or inertia switch.

In the future, check this site. It has lots of diagrams.
 
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