Fuel pump will not shut off

5

Asked by Jan 22, 2016 at 04:25 PM about the 1989 Ford F-150 S Standard Cab 4WD SB

Question type: Maintenance & Repair

Turn switch on and fuel pump runs for a few seconds. Then cuts off.
Mine keeps running.

2 Answers

18,860

Suspect the fuel pump relay. Normally the fuel pump relay operates during starting and when turning off the engine. If it is stuck, the pump could continue to run. A full explanation of how the relay works and how to check it is quite long. I suggest you check the net for info on how a fuel pump relay works and conduct the electrical test. It is straight forward. Basically, if the relay is sending power to the pump with the engine off, it is defective.

6,635

Fuel Relay contact stuck closed. Replace relay

Your Answer

Add photo

Related Questions

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 8,210
#2 dandyoun
dandyoun
Reputation 4,400
#3 tennisshoes
tennisshoes
Reputation 2,880
View All

Related Models For Sale

Used GMC Sierra 1500
784 Great Deals out of 70,049 listings starting at $1,550
Used Ford Mustang
637 Great Deals out of 46,709 listings starting at $750
Used Ford F-250
486 listings starting at $2,000
Used Ford Ranger
178 Great Deals out of 5,692 listings starting at $950

Used Cars For Sale

2018 Ford F-150 For Sale
163 listings starting at $32,855
2017 Ford F-150 For Sale
49 Great Deals out of 136,095 listings starting at $18,272
2016 Ford F-150 For Sale
105 Great Deals out of 12,126 listings starting at $18,880
2015 Ford F-150 For Sale
226 Great Deals out of 8,482 listings starting at $16,999
2014 Ford F-150 For Sale
364 Great Deals out of 12,615 listings starting at $9,500

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.