electrical issue? Truck wont stay running - Ford Powerstroke Diesel Forum
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Old 11-20-2013, 08:26 PM
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electrical issue? Truck wont stay running

I have a very stange issue. I have a 2003 F250 7.3L CC with 150k. I drove it about 60 miles to pick up some snow tires for my mustang. I am almost to my destination when the radio starts to die. Then the odometer and trip computer start to dim out and the abs light comes on, then while still traveling at 50mph the speedo/rpm guage go to 0 while the motor is still running. So i assume the alternator which is 8months old is bad again. I pull into the guys driveway put the truck in park and it stalls. After i get the tires i go out truck cranks over nicely and starts. Everything has power again for about 2miles then the truck stalls while driving. This happened several times while i was trying to make it to the closet auto zone. After only making it about 3 miles from the guys house I finally gave up and called AAA to have it towed home. When i got home truck still would start and run for about 2min slowly losing power and stalling again. If i start the truck and put a load on it like turning on the headlights truck will stall out.

I have both batteries completely charged, and had the alternator checked. Everything checks out fine. Any ideas what the issue could be? Its been a little over two weeks. Really need to get this truck back on the road. thanks
Mark
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Old 11-22-2013, 08:05 AM
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Sounds familiar, I chased a similar problem with my 2000 powerstroke for over 3 weeks. Charged batteries, changed batteries, checked alternator to no avail. The powerstroke needs atleast 5 volts for many of the sensors or it will shut down the engine. After watching the data log on a scanner I notice a voltage drop to the hpop. Found out that the factory battery terminal were corroded from within, couldn't see it. Ended up putting marine grade terminals on it and had the leads re-crimped for the terminal. She hasn't missed a beat since...
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