Stalls with loss of display. - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 06-01-2011, 12:43 PM Thread Starter Rookie
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Stalls with loss of display.

Hope someone can point me in the right direction to start solving this one.

Today, my wife takes the truck out to the post office, water company ect. w/o incident.

I hook up the trailer and pull around to the garage to check tire pressure ect and leave the truck running with AC on high since it was already 92f.

The truck just shut off where I thought the wife turned it off. I jumped in a cranked it over; she fired right up and purred as normal. I turned it off and went and got my scanner to scan for codes.

Plugged Scanner in and had no codes present, so I fired up the truck and was navigating on the scanner to the dataline stream when the scanner tool display started flickering like it was getting voltage fluctuation. I looked up and all the dash gauges were off including the odometer display (like the key was in off position) and a few seconds later she stalled.

I cycled the key and the displays remained off plus the radio remains off also. The AC fan still functions as normal. I waited 20 min and cycled key, display came alive as normal and within 5 seconds cycled off, kinda like a heat soak in an electrical line causing resistance.

The truck is a 2004 F350 CC LWB 6.0 King Ranch I have had since new, 89800 miles 80% towing more than 8k lbs. Mods EGR delete, turbo cleaned and oil cooler all done last July.

Truck has been showing no drivability issues prior to this morning’s incident. I am glad this happened in the yard even though the trailers tied to it then 500 miles away on the side of the Highway.
Has anyone has any issues like this, need some guidance on were to start looking.

Thanks in adavance, Troy
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post #2 of 2 Old 06-01-2011, 03:20 PM Thread Starter Rookie
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Well I went out to and pulled the #302 PCM relay and the odometer stays on but the gas gauge moves up to empty ( tank is full). I inserted the relay and the gas gauge goes to full then the relay trips and I loose everything. definately a short somewhere just not sure the best way to isolate and repair.
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