Dual Tank Overflow Question

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Feb 10, 2005 | 08:49 PM

DCC

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Joined: Oct 2002

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From: Pagosa Spring USA

Dual Tank Overflow Question

I've posted questions in about ten appropriate threads but still can't get a straight answer. I have the infamous "Fuel Tank Cross-Flow" problem in my '95 F350, 7.5L: My rear tank pumps gas into the front tank because the front tank's check valve leaks.

I cannot seem to get a simple one-word answer to my question from anyone who has made this repair. Here is the question:

Do I need to replace just the pump or do I need to replace the entire Fuel Delivery Module (with the sending unit, pump, etc. in it)?

The pump is a component of the FDM. The FDM is what gets initially pulled out of the tank when this repair is made.

Will someone please have mercy on me and give me a simple answer?

Thanks in advance,
Dan in Colorado

Last edited by DCC; Feb 10, 2005 at 08:49 PM. Reason: spelling

Feb 10, 2005 | 09:14 PM

Kansas-Mike

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Joined: Jan 2005

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From: 11worth Kansas

Did you see this thread? https://www.ford-trucks.com/forums/s...d.php?t=341697

Feb 11, 2005 | 03:38 AM

FordTracMan

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My understanding,the fuel pump can't be changed in the FDM.There have been posts concerning adding a check valve instead of a FDM to correct the problem.

Feb 11, 2005 | 08:14 AM

DCC

Thread Starter

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Joined: Oct 2002

Posts: 51

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From: Pagosa Spring USA

Yeah, a check valve can be added. My Ford guys want $250 for one (NOT!). They are being real dips about this whole thing. And, I did post a complaint at NHTSA already. I have seen posts refering to "replacing the pump" in my year range.

I still need to know if I need just a pump or the whole drop-in unit.

Thanks for your replys.
Dan