1989 Ford F-150 Fuel tank switch inoperative

JONAS.CALSBEEK

MEMBER
1989 FORD F-150
6 CYL
2WD
MANUAL
155,000 MILES

When trying to switch between fuel tanks, I notice that nothing happens when I flip the switch back and forth. Is this a solenoid issue?

Thursday, May 29th, 2008 AT 6:05 PM

5 Replies

BLACKOP555

MECHANIC
10,371 POSTS

Do you notice the fuel guage change any?

Probably a faulty fuse or bad switch.

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Thursday, May 29th, 2008 AT 6:42 PM

JONAS.CALSBEEK

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5 POSTS

Well the gauge is pegged out past the FULL mark and I'm troubleshooting that as well, probably need to just switch out the gauge. I opened the fuel door to listen for the fuel pump in either tanks but couldn't distinguish what was going on. I will probably try and swap out the switch as all of the fuses are good and appropriate size.

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Thursday, May 29th, 2008 AT 8:37 PM

BLACKOP555

MECHANIC
10,371 POSTS

Sounds like a good idea.

Also make sure the wiring harness is in good shape to both tanks and to the switch.

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Friday, May 30th, 2008 AT 9:12 AM

JONAS.CALSBEEK

MEMBER
5 POSTS

The wiring harnesses that you are referring to are located just before the fuel pumps, correct? I had a hard time locating the wiring without getting the truck on a lift. Thanks for the help.

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Saturday, May 31st, 2008 AT 12:49 PM

BLACKOP555