gas tank problem

Reply Subscribe

Thread Tools

Search this Thread

Feb 15, 2003 | 10:57 AM

prospector925

Thread Starter

New User

Joined: Feb 2003

Posts: 1

Likes: 0

gas tank problem

i have a 1986 ford f 150 with dual tanks.the gas guage works when it is on the front tank but when i switch to the back tank it goes to empty even when that tank is full.can anyone tell me how to fix this problem-thanks

Feb 15, 2003 | 04:49 PM

Andysutt

Postmaster

Joined: Jan 2003

Posts: 3,775

Likes: 2

From: Conway Arkansas

gas tank problem

bad sending unit. (however you spell that word) Is my guess.

Feb 15, 2003 | 06:30 PM

steve83

Post Fiend

Joined: Nov 2002

Posts: 9,987

Likes: 7

From: Memphis, TN

gas tank problem

You need to test the sending unit circuit from the select switch (known to go bad) back to the affected tank. You might have a bad switch, a bad wire, or a bad sending unit.

Feb 15, 2003 | 11:33 PM

Superdave

Posting Guru

Joined: Sep 1999

Posts: 2,297

Likes: 1

From: Indiana

gas tank problem

prospector925, Switch to the affected tank. Turn your ignition key forward, but not all the way to start positon. Pull the sending unit wire, ground it to anything, if the circut is good from the plug on connector to the dash, the gauge should peg, then the sending unit is the problem.

Emphasize, make sure you are getting a good ground, when doing this.