Why wont my 91 f150 start when engine temp is up to nornal?

5

Asked by May 27, 2015 at 07:13 PM about the 1991 Ford F-150

Question type: Maintenance & Repair

We have a 91 f150 4x4. runs great, starts right up when engine temp is cold but after driving it or letting it run and get up to normal temp, turn it off and it will not start again till engine is cooled off. Replaced a bunch of sensors including the ECT sensor, sounds better but still will not start if engine in warm or hot. what could this be?

3 Answers

69,455

When it refuses to start spray a little starting fluid down the throttle body. If it runs a few seconds on the starting fluid it's a fuel problem. If not it's an ignition problem. I'm leaning towards the ignition system. Sometimes an ignition coil will perform perfectly when cold but break down once it gets hot. HTH -Jim

8,530

Are there codes 14 and or 18 in the memory? These are the TFI and stator. Motorcraft sells the best. The gear has to be pressed off the shaft. Buy your parts at the ford parts counter and have a tech get it together For you to reinstall, your likely cause. Get your codes, run the tests, use motorcraft and run another 10 years or more.

8,530

Ask about connector update while at ford parts, some were in need of a repair connector and comes with a really excellent installation plan and supplies.

Your Answer

F-150

Looking for a Used F-150 in your area?

CarGurus has 181,858 nationwide F-150 listings starting at $1,000.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    8,760
  • #2
    dandyoun
    Reputation
    4,480
  • #3
    tennisshoes
    Reputation
    3,010
View All

Related Models For Sale

Used GMC Sierra 1500
783 Great Deals out of 67,741 listings starting at $1,350
Used Ford F-250
477 listings starting at $1,295
Used Ford Mustang
746 Great Deals out of 42,272 listings starting at $1,300
Used Ford Explorer
794 Great Deals out of 62,795 listings starting at $1,425

Used Cars For Sale

2018 Ford F-150 For Sale
6,563 listings starting at $18,539
2017 Ford F-150 For Sale
59 Great Deals out of 106,821 listings starting at $15,407
2016 Ford F-150 For Sale
109 Great Deals out of 7,750 listings starting at $18,990
2015 Ford F-150 For Sale
259 Great Deals out of 9,949 listings starting at $14,675
2014 Ford F-150 For Sale
352 Great Deals out of 13,138 listings starting at $8,990

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.