When I switch to the rear tank on my '89 ford f250 it pumps all the gas to the front tank that is all ready full. Why is it doing this?

Asked by buckcrazy Jan 08, 2014 at 04:37 PM about the 1989 Ford F-250 STD Standard Cab 4WD LB HD

Question type: Maintenance & Repair

This has started after we put new fuel pumps in both tanks.

3 Answers

44,975

You will have to change both fuel pumps and filter and ford makes a check valve that goes on both fuel pumps that will need to be installed. This is as per ford tsb's.

2 people found this helpful.
44,975

It's not the fuel pump that's the problem. It is the metal lines the fuel pumps attach to. They have a built in check valve and they are blown out letting the pump push fuel into the other tank. That is why it has to be ford complete unit fuel pumps.

1 people found this helpful.

Your Answer:

F-250

Looking for a Used F-250 in your area?

CarGurus has 6 nationwide F-250 listings and the tools to find you a great deal.

Postal Code:

CarGurus Experts

  • #1
    Gene Arnett
    Reputation
    2,070
  • #2
    MikeSt
    Reputation
    1,000
  • #3
    MrRatchet42
    Reputation
    810
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used GMC Sierra 1500
148 Great Deals out of 7,258 listings starting at $3,950
Used Ford Mustang
65 Great Deals out of 1,259 listings starting at $4,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.