Dang Wipers Keep Coming On!
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Senior User
Joined: Dec 2003
Posts: 248
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From: Homestead, FL USA
Dang Wipers Keep Coming On!
I am driving my Father-In-Law's 1999 F150 this summer. Every once in awhile the dang windshield wipers just come on for one swipe. This usually happens when I take a turn but sometimes it just happens. I would love to give him back his truck with this fixed. Someone want to give a clue what this might be? Oh and the truck is having problems with the mechanism that moves the windows up and down and the electric locks do not work. How to fix these?
Moderator
Joined: Jan 2001
Posts: 56,990
Likes: 2,740
From: Virginia
I don't have my diagrams with me, but if the Gem module is tied into the wipers, it may be the problem. I am pretty sure the electric windows and door locks are tied into the GEM.
This is an electronic module that has all sorts of timing controls for the accessories in the truck. And your truck also may be in the year or two where they had windshield leak problems. The water would run down and ruin the connections at the GEM module, and also sometimes the fuse box. This is all mounted on the firewall under the dash.
This is an electronic module that has all sorts of timing controls for the accessories in the truck. And your truck also may be in the year or two where they had windshield leak problems. The water would run down and ruin the connections at the GEM module, and also sometimes the fuse box. This is all mounted on the firewall under the dash.
Post Fiend
Joined: Mar 2003
Posts: 14,413
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From: Sarnia, Ontario, CANADA!
My dad's 99 F150 has the same problem. Check out this thread I made: https://www.ford-trucks.com/forums/s...d.php?t=375284 I haven't looked at it so I can't tell you that it is 100% the problem.
-Matt
-Matt
