aftermarket pcm problem - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 01-23-2008, 05:27 PM Thread Starter
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aftermarket pcm problem

i fried my factory pcm by trying out a 6 position bully dog without disconnecting the batteries. i had a generic 60hp chip that ran great before that. i went to an aftermarket computer site out of florida an tried now 2 of their pcm's and niether will accept a chip. i properly cleaned the tabs and installed them correctly. any ideas? are these aftermarket pcms just too weak to run chips.
the issue i experience when i try these chips is no wait to start light, telling me there is no communication with my injectors. the truck lights up the gauges and cranks, just no fire. any help is appreciated. thank you
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post #2 of 8 Old 01-24-2008, 05:16 PM
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It has nothing to do with "PCM strength" it has more to do with the PCM code.

You'll want to make sure the chip you have will be compatible with the PCM code you have on your aftermarket PCM.

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post #3 of 8 Old 01-24-2008, 06:43 PM Thread Starter
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are you speaking of the code labeled on the box or the program code used to flash the pcm when it was sent to me? do you think if i have it reflashed by the dealer or bullydog it will straighten it out? thank you
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post #4 of 8 Old 01-24-2008, 07:08 PM
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We are talking about the code flashed on the PCM. The PCM can be flashed my the dealer or by DP tuner. Call and find out what the PCM is flashed for then get the chip flashed to the same PCM code.

Just remember, the two PCM codes must match. If the PCM is PMT1 then the chip must be flashed for PMT?.

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post #5 of 8 Old 01-24-2008, 07:14 PM Thread Starter
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when you say what the pcm was flashed for you mean what numbers on the box of the 99 7.3L original pcm, correct?
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post #6 of 8 Old 01-24-2008, 07:22 PM
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I will take a pic of where the PCM code is and post up in a little bit.

It is on the plug and it is 3 letters and a number.

Early 99 (Born on 11-20-98) F350 CC LWB 4X4
north of 480hp and south of 13.7sec
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post #7 of 8 Old 01-24-2008, 07:24 PM Thread Starter
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yes, i had to give them that code when i ordered it. any other ideas? thank you
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post #8 of 8 Old 01-24-2008, 07:54 PM
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If it worked before, I would try to call them to find out what tune they actually burned the PCM with. Maybe they sent the second one out different what you wanted. Is there anything on the new PCM that would identify the PCM code?

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north of 480hp and south of 13.7sec
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