Looking for some help...truck acting wired and DTCs - Ford Powerstroke Diesel Forum
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Old 04-26-2012, 06:48 PM
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Looking for some help...truck acting wired and DTCs

I was driving around tonight and truck was running fine. Went to accelerate from a stop and the engine light comes on and I have no power while stepping on the gas. It's like the truck is dead, then after a few seconds it tt takes off like normal and the cel goes off. Few miles later, same thing.
When I got home I pulled the codes with my Hypertech programmer and got 3 codes....P0122, P0472 and P1670. Looks like these are exhaust back pressure sensor, Throttle position sensor and something about low voltage. Wondering if I should replace the TPS? Also wondering if the CPS could be the culprit?
Any suggestions?

Truck is an '03 auto, stock except for the Hypertech.
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Old 04-27-2012, 06:05 AM
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I wouldn't think the CPS, what you're describing is classic TPS....

Have you ever looked at the OD button wires under the column (now might be a good time to insulate against this common issue) because TPS problems and those wires can actually be connected. Even though you're not blowing the fuse, this could be causing early indications of the wires shorting.

Look at this ->99-03 OD wire fix
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Old 05-01-2012, 08:25 AM
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Changed the TPS/pedal assembly over the weekend. That seemed to do the trick along with better throttle response. I will definately look into the wires under the column when I get a chance also.
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