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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

95 F-150 ext cab

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Old Apr 26, 2012 | 01:45 PM
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95 F-150 ext cab

No fuel pressure at the fuel rail. Hard wired inertia switch. Grounded the FP lead and still now fuel pump noise. Would appear I'm pulling tanks or am I forgetting to test something? Thanks for the help.

George
 
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Old Apr 26, 2012 | 04:13 PM
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Is the inertia switch button pressed down?
 
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Old Apr 26, 2012 | 06:55 PM
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Checked the fuse? Relay? Checked for power at the pump?
 
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Old Apr 27, 2012 | 06:33 AM
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Originally Posted by minnesotafisherman
Is the inertia switch button pressed down?
yes it's hard wired
 
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Old Apr 27, 2012 | 06:34 AM
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Originally Posted by critterf1
Checked the fuse? Relay? Checked for power at the pump?
yes checked fuse and relay but, not power at the pump. Will read the manual to see where to find those wires thanks
 
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Old Apr 27, 2012 | 12:36 PM
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Could be the dash switch too.

Why is the inertia switch hard wired? You do realize that there's a reason Ford installed an inertia switch right?
 
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Old Apr 28, 2012 | 08:17 AM
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Originally Posted by andym
Could be the dash switch too.

Why is the inertia switch hard wired? You do realize that there's a reason Ford installed an inertia switch right?
yes incase I get into a crash it will stop the fuel flow but, to eliminate that problem wire the two leads together bypassing the inertia switch is much cheaper then going to the parts store and buying one just to see that's not the problem. What on earth did we do when cars were built with out crap like that?
 
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Old Apr 28, 2012 | 08:22 AM
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If I run a jumper between the FP diagnostic lead and a ground sometimes the pump comes on and some times it doesn't. This morning go out turn the key on and can hear the pump do it's think for a sec then start the truck and poof it runs. Just wondering if any one else out there has run into an intermitent issue like this. Also there are four relays under the hood I've switched those around to make sure it's not a relay issue. Just seems odd. Could also be a faulty ground back at the tanks i suppose trying not to pull those tanks unless I just have to.
 
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Old Apr 28, 2012 | 08:22 AM
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Originally Posted by andym
Could be the dash switch too.

Why is the inertia switch hard wired? You do realize that there's a reason Ford installed an inertia switch right?
Thanks I'll check the dash switch which changes between tanks this morning.
 
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Old Apr 28, 2012 | 08:24 AM
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Originally Posted by critterf1
Checked the fuse? Relay? Checked for power at the pump?
Have I got to drop the tank to check for power at the tank? I know may sound like a stupid question but, the only stupid question is the one not asked (it's a Marine Corps thing)
 
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Old Apr 29, 2012 | 09:27 AM
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ok well guess no one has a clue. thanks for the help.
 
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Old Apr 29, 2012 | 11:12 AM
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Hard wire the pump to the battery?
 
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Old Apr 29, 2012 | 07:25 PM
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Originally Posted by afmc31602
What on earth did we do when cars were built with out crap like that?
We died in gasoline-fueled fiery car wrecks that otherwise wouldn't even warrant a trip to the hospital. Yay for auto safety standards.
 
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