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Dual Tank Problems

Dual Tank Problems

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Old

Apr 11, 2004 | 03:50 PM

#1

1987_f150

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Joined: Nov 2003

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From: State College, PA

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Dual Tank Problems

I have an 87' F150 with dual tanks. The front tank works just fine. When i switch it to rear tank, it shows way past full. I know theres gas in there cause i tried to fill it one day. The other day, i ran on my rear tank all day and when i switched to my front tank, i noticed i was near empty. Anyone know what my problem is?

1987 F150 XLT Lariat 302

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Old

Apr 11, 2004 | 10:30 PM

#2

LxMan1

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Joined: Dec 2001

Posts: 22,436

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From: Louisville,Ky.

Sounds like the switching valve isn't shifting and even though the gauge is reading the rear tank, it is still pumping gas from the front tank.

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Old

Apr 18, 2004 | 12:46 AM

#3

carpe_diem

Fleet Mechanic

Joined: Feb 2003

Posts: 1,314

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My rear tanks reads empty all the time due to faulty sending unit (integrated into the internal fuel pump).

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