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kinger69877
New User
Jun 20, 2008, 3:37 PM
Post #1 of 6
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meone help me PLEASE
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 I have a 1986 F150 with a 302 EFI with duel tanks, while driving it down the highway the truck quit and now wont start. It will roll over but no start, when I turn the key I dont hear the fuel pump kick in. I checked the wire to the High Pres. pump (on the frame) and I only have 0.01 volts. Can anyone help me to figure out the problem, not even sure where to look; I tried reseting the fule pump shut-off switch, but that never worked. I have lots of power to the solinoid. Help me if you can please/
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 20, 2008, 3:48 PM
Post #2 of 6
(1368 views)
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Re: meone help me PLEASE 86 F-150 Dual gas tanks
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Hmmm? Doesn't this have a fuel pump in each tank? Can't you just switch to the other one for now. Not sure but it may share just one fuel filter,
T
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kinger69877
New User
Jun 20, 2008, 3:51 PM
Post #3 of 6
(1366 views)
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Re: meone help me PLEASE 86 F-150 Dual gas tanks
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It does not matter which tank I have the switch on I cant get power to the main pump,
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Jun 20, 2008, 4:06 PM
Post #4 of 6
(1363 views)
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Re: meone help me PLEASE 86 F-150 Dual gas tanks
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Could be and probably is me but I think each tank has its own pump and no other involved or shared. No matter - you are reading nothing for voltage and just in general for Fords of the 80s and 90s relays are common to just up and quit like that.
I just plain admit I don't know the trucks that well. Relay for fuel pump(s) is likely underhood and has a green connector if that helps and it's probably not marked otherwise.
Sometimes in a jam you can just whack them with the plastic of a screwdriver and they snap to till you get another one if that trick works,
T
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kinger69877
New User
Jun 20, 2008, 4:09 PM
Post #5 of 6
(1361 views)
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Re: meone help me PLEASE 86 F-150 Dual gas tanks
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Thank you very much, I will give that a shot and see and let u know if it works.
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jayeffel
User
Jun 21, 2008, 4:26 AM
Post #6 of 6
(1355 views)
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Re: meone help me PLEASE 86 F-150 Dual gas tanks
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The dual tanks do have separate pumps in the tanks themselves. They share one fuel filter. My front tank pump stopped working ( all evidence points to the pump) and I simply switched to the back tank for all use. I have filled the front tank and used it as spare; only problem is I have to siphon to transfer from tank to tank.
Would fix the front pump except need to drop tank to get at pump.
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