Truck won't crank unless fuel pump shuts off

10

Asked by Aug 10, 2016 at 07:26 PM about the 1990 Ford F-150 XLT Lariat LB

Question type: Maintenance & Repair

I have to turn the key and let the truck sit until the fuel pump cuts off. If it rains
it can take an up to an hour for the fuel pump to shut off. The fuel pump is not
even a year old fuel filter has like 2000 miles on it...

2 Answers

66,705

The fuel pump is set on pressure and should cut off 3-5 seconds after you cut key on,if it keep,s running as you said it is not pumping and biulding pressure,check your fuel pressure with guage,think that fuel pump may be bad.

1 of 1 people found this helpful.
10

I replaced the fuel pump relay and it fixed the problem. But the next morning when I went out to crank the truck the fuel pump took its usual 30 minutes to cut off and the battery was dead. I'm goin to look for shorts in the harness and bad grounds

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 8,530
#2 dandyoun
dandyoun
Reputation 4,420
#3 tennisshoes
tennisshoes
Reputation 2,950
View All

Related Models For Sale

Used GMC Sierra 1500
792 Great Deals out of 67,998 listings starting at $1,700
Used Ford F-250
469 listings starting at $4,390
Used Ford Mustang
685 Great Deals out of 44,481 listings starting at $1,500
Used Ford Explorer
918 Great Deals out of 63,685 listings starting at $799
Used Ford Ranger
182 Great Deals out of 5,560 listings starting at $900

Used Cars For Sale

2018 Ford F-150 For Sale
1,197 listings starting at $29,070
2017 Ford F-150 For Sale
72 Great Deals out of 123,100 listings starting at $18,199
2016 Ford F-150 For Sale
121 Great Deals out of 9,236 listings starting at $14,950
2015 Ford F-150 For Sale
210 Great Deals out of 8,889 listings starting at $15,990
2014 Ford F-150 For Sale
339 Great Deals out of 12,424 listings starting at $9,900

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.