wiring

2005 FORD F-150

177,000 MILES • 5.4L • V8 • 4WD • AUTOMATIC

BRANDON WYATT

MEMBER
2 POSTS
FOLLOW

My truck shifted into four low and will not come out. no vacuum leaks and just replaced both vacuum hubs. any ideas?

Nov 27, 2017 at 9:02 AM

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STRAILER

AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 POSTS

There is a control relay and the encoder motor on the transfer case that sound like may have gone bad. Here is a wiring diagram and a few guides to help us do some simple testing to figure out what the problem is.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check the clockwise and counterclockwise relays

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

Images (Click to enlarge)

Apr 12, 2021 at 12:16 PM