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Old 05-07-2014, 02:15 PM
jjpski jjpski is offline
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Question 7.3L Powerstoke Tank Switching Problem

I have a 96 Ford F250 Crew Cab and having a tank switching problem.

The truck was in storage for 3 and half years. While it was in storage someone was driving and starting one a week. When I picked it up from storage the fuel indicator stopped working on both tanks and it would not switch tanks. Currently the vehicle only draws fuel from the front tank which had to be replaced because the tank rusted through.

I have already replaced the tank switching valve which now it indicates fuel levels. Verified by siphoning some fuel from the rear and putting in the front. one problem solved. But it still will not draw fuel from the rear tank. If I switch the truck to the rear the tank it runs fine but it is still running off the front tank. I have checked power to the valve in the front and rear positions and have 12v on each system. Does the tank switching valve have anything to do with fuel level indication? Does the tank switching valve ground through itself to switch tanks? Any tips are appreciated.

Jared
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Old 05-07-2014, 03:07 PM
farmert farmert is offline
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Yes, there is a fuse in the in cab fuse box that controles the fuel selector selinoid that also is tied to the fuel gauges. Setting that long, the selector valve may be stuck in one position. You should be able fo hear a faint zipping sound from the tank selector when it is changed from one tank to the other.
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1985 F250 Reg. cab 6.9,94 factory turbo, zf5 speed, 3.55 4X4, flatbed, dual 3.5in. stacks
1990 F350 SRW Crewcab 7.3 turbo 4.10 zf 5spd 4X4
1997 F350 SRW Reg cab powerstroke 4.10, zf5spd 4X4, 3inch downpipe, 6637 mod, intercooler
1996 F350 Crewcab dually 4.10, E4OD, 3" downpipe, 6637 filter
1996 F350 C&C Dually reg cab 4X4 flatbed Zf5 4.10, 3" downpipe, 6637 filter
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Old 05-07-2014, 03:07 PM
 
 
 
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