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

56,625

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

6,970

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.

6,970

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

Add photo

Related Questions

F-150

Looking for a Used F-150 in your area?

CarGurus has 203,970 nationwide F-150 listings starting at $1,273.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,280
#2 dandyoun
dandyoun
Reputation 3,960
#3 tennisshoes
tennisshoes
Reputation 2,340
View All

Related Models For Sale

Used GMC Sierra 1500
1,144 Great Deals out of 58,007 listings starting at $995
Used Ford F-250
553 listings starting at $1,977
Used Ford Mustang
724 Great Deals out of 38,313 listings starting at $1,750
Used Ford Explorer
1,436 Great Deals out of 72,308 listings starting at $985
Used Ford Ranger
224 Great Deals out of 6,942 listings starting at $1,500

Used Cars For Sale

2017 Ford F-150 For Sale
36,529 listings starting at $17,605
2016 Ford F-150 For Sale
218 Great Deals out of 98,125 listings starting at $17,795
2015 Ford F-150 For Sale
286 Great Deals out of 8,308 listings starting at $18,891
2014 Ford F-150 For Sale
557 Great Deals out of 11,349 listings starting at $9,900
2013 Ford F-150 For Sale
801 Great Deals out of 14,762 listings starting at $7,527