help please! pcm vss cps?? - Ford Powerstroke Diesel Forum
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Old 03-03-2014, 04:56 PM
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help please! pcm vss cps??

hey guys im new here, ive got a 1995, f350 2wd its obdII, its got codes, p0500-vss malfunction, p0603-internal control module KAM malfunction, P0344-CPS circuit intermittent, P0237-Turbo boost sensor A circuit low, and P0470.

The truck started dying while driving or while warming up, now it is having shifting issues, IE hard, late, stalling, and jerking. The speedo isnt working, and the miles arent showing anything, just lighting up. also the od off light is blinking. if anyone could point me in a direction, ive been hearing PCM from some ppl i have spoken to, thanks in advance!

Dave
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Old 03-04-2014, 07:50 AM
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First try a CPS.
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Old 03-04-2014, 07:56 AM
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Quote:
Originally Posted by daves95stroker View Post
and the miles arent showing anything, just lighting up.
Not sure what that means. "Lighting up" could mean the illumination light, or the number itself. Does a _number_ appear in the odometer? If it shows a number, but fails to count up, the PSOM is _probably_ good, and the fault lies with the VSS and/or the wiring from the VSS to the PSOM. Have you removed and inspected or tested the VSS?

CPS is a separate problem; if there's an aftermarket CPS in there, get it out and replace with Ford or International part ONLY.
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Old 03-04-2014, 09:33 AM
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There are no numbers, just the background light, n I'll try the ford cps, used advance auto brand n it didn't help, got a vss yesterday, just gotta put it in
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