fuel pumps???
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Junior User
Joined: Oct 2009
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fuel pumps???
I had my friend who owns his own shop fix my rear tank today. But now that I picked it up and drove it, it dies...but it will still start and go for a while before it dies. He said he fixed something behind the dash on the switch it self. So I wana kno if there is two seperate pumps. It runs so long that when I switch it between front and rear tanks it will run for a long time so I know its drawing from both tanks. So any ideas on what I should do? Also I'm getting really bad volt readings I have a feeling there's no voltage regulator or the alternator is going bad or the wires are corroded so if someone could tell me where the regulator is located?
New User
Joined: Jul 2010
Posts: 3
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From: Indiana
I had my friend who owns his own shop fix my rear tank today. But now that I picked it up and drove it, it dies...but it will still start and go for a while before it dies. He said he fixed something behind the dash on the switch it self. So I wana kno if there is two seperate pumps. It runs so long that when I switch it between front and rear tanks it will run for a long time so I know its drawing from both tanks. So any ideas on what I should do? Also I'm getting really bad volt readings I have a feeling there's no voltage regulator or the alternator is going bad or the wires are corroded so if someone could tell me where the regulator is located?
I have an '89 f250 with the dual tanks, last winter i had a fuel problem like you did. On my truck I realized that there are actually a total of 3 fuel pumps.
Posting Guru
Joined: May 2007
Posts: 1,208
Likes: 2
From: North Reading Mass
IIRC Ford used the three pump system until 90. My 92,94, and 95 all have a pump in each tank. The selector switch on the dash powers the pumps. Check the fuel pump relay under the hood.
An easy check for the charging system is to take a voltage reading at the battery with the truck off. The voltage should be 12.5 to 12.8 volts. Start the truck and voltage should be 13.5 to 14.2 volts. Put on the lights and heater blower to see if the alternator can handle a load.
The fender ground and other terminals can corrode or loosen. The cables themselves can become resistive too.
regards
rikard
An easy check for the charging system is to take a voltage reading at the battery with the truck off. The voltage should be 12.5 to 12.8 volts. Start the truck and voltage should be 13.5 to 14.2 volts. Put on the lights and heater blower to see if the alternator can handle a load.
The fender ground and other terminals can corrode or loosen. The cables themselves can become resistive too.
regards
rikard
