7.3L Electrical Issues (please help)
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From: Arvada
7.3L Electrical Issues (please help)
First off let me introduce myself. My name is Jim, I was on this site three or four years ago and ya'll helped out a lot. Hoping you can again
The truck: '02 F350 SWR 7.3L 4x4 Crew Cab Lariat w/ just over 290k miles
Now the problem: Recently i've been having some electrical issues in the cab of the truck. Symptoms: Radio shuts off completely (no power whatsoever-not even the clock). When this happens, the dome lights (not the big one but the two on the outside of the large one with the overhead switches) will not turn on either, and the power windows also stop working. It happens randomly, and everything will stay "powerless" from anywhere to a couple of seconds to a couple of hours. Shutting the truck off and cycling the key doesn't help, as nothing really does. I've basically just been stuck waiting for the power to come back. Its not really a big issue, but definitely frustrating...especially when the windows get stuck down and it starts raining. I've checked the wiring behind the stereo, both passenger and driver side switch panels, fuses, and i'm now at a loss for the most part. I'm gonna check the wiring in the rubber conduit in the door jams next but after that i have no clue. Has anyone else had this problem and has the possible solution, or is there anybody that has some other ideas to what could be wrong?
The truck: '02 F350 SWR 7.3L 4x4 Crew Cab Lariat w/ just over 290k miles
Now the problem: Recently i've been having some electrical issues in the cab of the truck. Symptoms: Radio shuts off completely (no power whatsoever-not even the clock). When this happens, the dome lights (not the big one but the two on the outside of the large one with the overhead switches) will not turn on either, and the power windows also stop working. It happens randomly, and everything will stay "powerless" from anywhere to a couple of seconds to a couple of hours. Shutting the truck off and cycling the key doesn't help, as nothing really does. I've basically just been stuck waiting for the power to come back. Its not really a big issue, but definitely frustrating...especially when the windows get stuck down and it starts raining. I've checked the wiring behind the stereo, both passenger and driver side switch panels, fuses, and i'm now at a loss for the most part. I'm gonna check the wiring in the rubber conduit in the door jams next but after that i have no clue. Has anyone else had this problem and has the possible solution, or is there anybody that has some other ideas to what could be wrong?
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From: Arvada
Heard the same thing on another forum, except with the GEM rather and the fuse box. Both the leaking windshield and my short seem to a common problem which I suppose is somewhat of a good thing...
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Reading up on some other forums, I've discovered this is a really common problem. Almost overly common, especially with no definite fix. If anyone else is having the same problem, I've read that there is a "battery saver relay" inside of the instrument cluster control module which keeps your windows and radio going after you turn off the vehicle. This relay supplies power to the central Junction Box and to the Accessory Delay Relay which you can apparently jump with some wire and it will work. I'm not sure if this will work but i'm gonna give it a shot tonight and i'll let ya'll know.
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So solution half *** found as mentioned before. Measured voltage on fuse #41 and wasn't getting a reading at all, checked the accessory relay (#306). Relay checked out and is working properly, so I measured the voltage in the bottom slot, measured 12.84V. Tried jumping the relay using bailing wire, and bam! Everything working. Leads me to believe its the ICM. So I used an alligator clamp and jumped onto an ignition wire to bypass the relay. now everytime I turn on the key everything works, key off nothing works...not necessarily the right way to fix it but definitely works and definitely cheaper!!
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From: Arvada
if anybody else is having this problem this is how I fixed it,
uploaded a bunch of pics and a step by step to a powerstroke forum located here: (screen name is same as this forum)
Radio and windows stopped working... - Page 9 - Ford Powerstroke Diesel Forum
uploaded a bunch of pics and a step by step to a powerstroke forum located here: (screen name is same as this forum)
Radio and windows stopped working... - Page 9 - Ford Powerstroke Diesel Forum
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