front fuel pump
Thread Starter
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Freshman User
Joined: Jul 2009
Posts: 27
Likes: 0
front fuel pump
91 f150 inline 6. front tank fuel pump. issues.
wont start, switch to rear tank ...starts..
dropped tank, removed pump, connected to battery..pumps fine. Auto zone sold me a 6 line fuel selector..which I couldn't locate on my fuel lines any where... returned to AZ..
reassembled and was able to start with front tank. drove on hi-way 10 miles...died..switch to rear tank.. drove home..
tested voltage at front pump less than 6 volts.. it is supposed to be 12volts?
Any ideas???
the rear tank pump sometimes doesn't seem to do well on hi-way
other info
gas gauge reads fuel levels on each tank
I will check voltage at switch and will post
new pump is 140.. i dont want to spend the money unless i have to.. cannot return installed pump
local pick n pull has no 90/91 f150s///go figure
any help???
wont start, switch to rear tank ...starts..
dropped tank, removed pump, connected to battery..pumps fine. Auto zone sold me a 6 line fuel selector..which I couldn't locate on my fuel lines any where... returned to AZ..
reassembled and was able to start with front tank. drove on hi-way 10 miles...died..switch to rear tank.. drove home..
tested voltage at front pump less than 6 volts.. it is supposed to be 12volts?
Any ideas???
the rear tank pump sometimes doesn't seem to do well on hi-way
other info
gas gauge reads fuel levels on each tank
I will check voltage at switch and will post
new pump is 140.. i dont want to spend the money unless i have to.. cannot return installed pump
local pick n pull has no 90/91 f150s///go figure
any help???
Posting Guru
Joined: Apr 2003
Posts: 1,153
Likes: 1
From: Venezuela
Check all wiring related to front tank. As far as I remember that truck has a fuel selector valve 6 port attached to left frame, right under driver seat, take a look at connector for overheated/burned pins or wires, also check electrical connector at front tank.
Confirm propper selector valve operation.
Confirm propper selector valve operation.
Thread Starter
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Freshman User
Joined: Jul 2009
Posts: 27
Likes: 0
thanks... i was told/sold one of those selectors...my ford aint got one no way no where no how... i have found my problem is that too many people(especially auto zone employees , professional mechanics, and ford employees) know a little about fords but not enough.
as i said i had the tank dropped fuel pump out, where i failed was i didnt do what I knew to do..replace the pump...i finally found an old mechanic who knew how to troubleshoot AND repair ...he laughed when i told him i dropped the tank and didnt replace the pump...
lss...(long story short) it was the fuel pump $149 later 2 times dropping the tank... truck runs...priceless
as i said i had the tank dropped fuel pump out, where i failed was i didnt do what I knew to do..replace the pump...i finally found an old mechanic who knew how to troubleshoot AND repair ...he laughed when i told him i dropped the tank and didnt replace the pump...
lss...(long story short) it was the fuel pump $149 later 2 times dropping the tank... truck runs...priceless
