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 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

20,515

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 of 2 people found this helpful.
20,515

Were the fuel pumps motorcaft/ford?

20,515

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.

Your Answer

F-250

Looking for a Used F-250 in your area?

CarGurus has 465 nationwide F-250 listings starting at $2,995.

ZIP:

Ford F-250 Experts

  • #1
    tennisshoes
    Reputation
    680
  • #2
    F_O_R
    Reputation
    370
  • #3
    dandyoun
    Reputation
    350
View All

Related Models For Sale

Used Ford F-150
2,576 Great Deals out of 199,184 listings starting at $1,300
Used Ford F-350
293 listings starting at $6,995
Used GMC Sierra 1500
1,014 Great Deals out of 66,358 listings starting at $2,495
Used Ford Mustang
595 Great Deals out of 36,389 listings starting at $899
Used GMC Sierra 2500
5 Great Deals out of 154 listings starting at $2,995

Used Cars For Sale

1999 Ford F-250 For Sale
21 listings starting at $5,995

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.