Electrical issue NEED HELP
Thread Starter
|
New User
Joined: Oct 2007
Posts: 8
Likes: 0
Electrical issue NEED HELP
200 F350 Crew Cab 7.3, if the truck is parked nose down and it rains heavy or snows I get bad problems. One being the heater fan will run without the key turned on. The other is I will loose my speedometer and the over drive light will flash. Once things dry up (?) everything is fine. This has happened to me twice now, this only happens when the truck is parked with a slight down hill position. Any ideals? I do leave the settings in a defrost, high heat, high fan position so the truck can defrost and be warm when I am ready to leave.
Fleet Mechanic
Joined: Nov 2003
Posts: 1,372
Likes: 14
From: West Cornwall, CT
Check to see if the windshield has a leak that allows water to collect around the central junction box and other electrical control modules.
Look under and behind the dash in the area above the steering column. If it is wet there, you probably found the problem.
Lou Braun
Look under and behind the dash in the area above the steering column. If it is wet there, you probably found the problem.
Lou Braun
Senior User
Joined: Apr 2003
Posts: 201
Likes: 0
From: Charleston
Check to see if the windshield has a leak that allows water to collect around the central junction box and other electrical control modules.
Look under and behind the dash in the area above the steering column. If it is wet there, you probably found the problem.
Lou Braun
Look under and behind the dash in the area above the steering column. If it is wet there, you probably found the problem.
Lou Braun
I went through and pumped silicone under the seal around the windshield, no problems ever since.
Cargo Master
Joined: Oct 2010
Posts: 2,089
Likes: 16
Remote start may be a source of problem too. Those usually power the ignition 1 & 2 wires which could be the source of heater coming on at random times. Hopefully u have the schematic on it and can check into that as well.
New User
Joined: Dec 2004
Posts: 6
Likes: 0
Sounds like water is finding its way into your GEM module. Correct ASAP. Those babies aint cheap. If nothing else wrap a piece plastic around your fuse block. Your GEM is mounted to the back of it. Then fix your windshield leak.
