i have 91 F 150 4.9 ENGINE . It will crank and run fine then just goes dead . If i switch tanks it will crank back up and run fine , then you drive for a while and it goes dead again .

Asked by Jun 24, 2015 at 09:41 AM about the 1991 Ford F-150 XL 4WD LB

Question type: Maintenance & Repair

if i'm running the front tank it runs fine for a while , then dies . i switch to the rear tank , it runs fine for a while then dies . i switch back to the front tank and it cranks back up and runs fine . It repeats this process ,

1 Answer

16,130

It sounds like you may have two bad fuel pumps. But what is the chance of that? If you can force it to malfunction in the driveway immediately run a fuel pressure check on the offending tank, then the other. It's going to be a process of elimination in a no run condition.

Your Answer

Add photo

Related Questions

Search Ford F-150 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,720
#2 dandyoun
dandyoun
Reputation 4,130
#3 tennisshoes
tennisshoes
Reputation 2,470
View All

Related Models For Sale

Used GMC Sierra 1500
975 Great Deals out of 60,125 listings starting at $1,299
Used Ford F-250
559 listings starting at $1,342
Used Ford Mustang
532 Great Deals out of 42,736 listings starting at $1,699
Used Ford Explorer
1,072 Great Deals out of 71,554 listings starting at $1,000
Used Ford Ranger
195 Great Deals out of 6,753 listings starting at $1,595
Used Jeep Wrangler
509 Great Deals out of 18,412 listings starting at $2,500

Used Cars For Sale

2017 Ford F-150 For Sale
5 Great Deals out of 83,301 listings starting at $17,710
2016 Ford F-150 For Sale
184 Great Deals out of 56,027 listings starting at $4,922
2015 Ford F-150 For Sale
215 Great Deals out of 7,513 listings starting at $18,296
2014 Ford F-150 For Sale
484 Great Deals out of 11,456 listings starting at $11,479
2013 Ford F-150 For Sale
655 Great Deals out of 13,985 listings starting at $8,450