No power after late 99 PCM upgrade - Ford Powerstroke Diesel Forum
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Old 08-06-2012, 02:04 PM
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No power after late 99 PCM upgrade

My old PCM was an xle4. Bought a xc3f off of eBay. With the new PCM I have no power. Do I need to have it reprogrammed? I thought it was plug and play? Thanks in advance for your help.
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Old 08-06-2012, 02:42 PM
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To the top.
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Old 08-06-2012, 05:43 PM
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Night time bump.
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Old 08-06-2012, 11:22 PM
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Morning bump.
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Old 08-07-2012, 12:04 AM
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Are those two PCM codes interchangable? I think you have to reprogram the PCM when you get a different one with a different code than your original.
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Old 08-07-2012, 03:19 AM
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How would I reprogram it? I assumed that any dpc-422 family PCM were interchangeable with the e99 pcm. Starting to think I should have kept the duramax.
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Old 08-07-2012, 09:00 AM
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You'd have to go to a Ford dealership.
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Old 08-07-2012, 09:05 AM
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DPC-422 should be a plug and play for the E99 truck. As for being down on power, there is a chance your original pcm had been reflashed with a performance tuner at some point and now your running on a stock PCM.

We can flash PCM's with stock or performance tunes if you're interested, let us know.
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Old 08-07-2012, 09:18 AM
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Let me rephrase "no power". Truck barely revs to 2000 rpm. And it takes forever to get to 2000 rpm. That's in park, no load!!
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Old 08-07-2012, 09:53 AM
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My early '99 was rather gut-less when stock... recent addition of a DP Tuner brought it to life. The rev issues is odd though... do you still have your original PCM to put back in?
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