Power window issue

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Jul 23, 2020 | 05:55 PM

Paulst

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Joined: Jul 2020

Posts: 5

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Power window issue

Hello, wondering if I can get some help. Have a 2000 f350. Did some upgrades turned out well. However, all of a sudden my power windows don’t work on any switch. No registered power to the main switch driver side. Checked all fuses and relays. All good. Weird part is, I get weak power going to the auto power window relay. When I do press and hold one of the power window switches down the speedometer moves to about 10 mph. Reminder the trucks not moving. Very weird, scratching my head on this one.

Jul 23, 2020 | 06:47 PM

Djosbun

Fleet Mechanic

Joined: Oct 2017

Posts: 1,704

Likes: 164

From: Southwest Ohio

Sounds to me like either a voltage drop issue or a ground problem. With everything off, including the truck, do the power locks function? If yes, you will need to do some diag to find the voltage drop. If locks do not work with the truck (and all accessories) off, check all of your grounds. Should be clean and green-free.

-- Dave