Inertia switch voltage

Reply Subscribe

Thread Tools

Search this Thread

Apr 24, 2005 | 11:23 PM

97Centurion

Thread Starter

Rub my Belly

Joined: Jan 2004

Posts: 3,093

Likes: 1

From: Lawrence, KS

Inertia switch voltage

I only have 7 volts to the inertia switch on my 2.9 88 BII. Should I have 12 volts? I have no fuel pressure and am trying to figure out the problem.

Apr 24, 2005 | 11:28 PM

Ford_Six

Hotshot

Joined: Oct 2002

Posts: 18,488

Likes: 22

From: The Big, Oregon

Check the fuel pump relay, the connector may be corroded. You are right, it should be 12v.

Apr 25, 2005 | 12:21 AM

97Centurion

Thread Starter

Rub my Belly

Joined: Jan 2004

Posts: 3,093

Likes: 1

From: Lawrence, KS

Thanks! Where is the relay located? I just picked this thing up today and haven't had the chance to pick up any manuals for it yet.

May 9, 2005 | 12:23 AM

vaquero32

New User

Joined: May 2005

Posts: 11

Likes: 0

i thought i had this same problem with my 99 F350 and i turned out to be incorrect. Checking it against another 350 at work showed that the pump does in fact only receive 7 volts with the key turned to on.

now using a scan tool to test the pump as the manual suggests got me 10.5 on both.

i replaced my fuel pump and problem was sovled.