7.3 won't go over 20mph. - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 06-28-2013, 01:39 PM Thread Starter
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Question 7.3 won't go over 20mph.

I am new to the site and wanted to know if I could get some advice on my 7.3 F350. I recently had the ECU rebuilt and also the IDM. My problem is that truck idles fine and revs up nicely in park, but when the truck is put in gear it wont go over 20 mphs. If I floor it wont go. I am looking for direction. On another note I have had two different mechanics tell me they cannot get into the ECU is there something else I should be looking at?
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post #2 of 2 Old 06-28-2013, 02:15 PM
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Is there a chance the PCM you have now was for a manual transmission? What's your PCM code? It's been awhile since I had my 7.3 but if I remember right the PMT1 is the preffered PCM

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