Are all pcm's the same?
I was going to put my pcm in my early 99 truck to see if it is a pcm problem. Is there any differenc es or will the 02 pcm work in an early 99?
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Yes, it will work. As long as both are autos or both are standards. That's a common mod for the earlies, actually. Better shift strategy & maybe a little better power, too.
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I understood it was different, because the early 99 has single shot injectors and the later model 7.3's have split shots.
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Ask Hucka1a or Rons Powertroke on how much of a boost they had from the changing out of PCMs make sure you get the code off of it so when you go to put a chip on there Jody can tune for the PCM.
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A PCM out of an 02 will not work in an early 99. The communication protocol is different between 99-01 and 02-03.
However, if you have an automatic early 99, a PCM out of an automatic 99.5-01 will work provided the emissions are compatible (Calinazifornia/Federal) |
Yep, Cody got it.
In 2002 Ford changed several inputs for the PCM, including the tach and a few others. So swapping a PCM from an 02 to an early 99 will cause some issues. At the very least you'll end up with CEL's constantly illuminated. |
Oh crud.... Sorry for missing that. Never even considered it -- but after I wrote that, something bugged me, especially since we have a lot of different stuff in the dash and all.
Thanks for the correction... |
Originally Posted by cleatus12r
(Post 7067300)
A PCM out of an 02 will not work in an early 99. The communication protocol is different between 99-01 and 02-03.
However, if you have an automatic early 99, a PCM out of an automatic 99.5-01 will work provided the emissions are compatible (Calinazifornia/Federal)
Originally Posted by Pocket
(Post 7067450)
Yep, Cody got it.
In 2002 Ford changed several inputs for the PCM, including the tach and a few others. So swapping a PCM from an 02 to an early 99 will cause some issues. At the very least you'll end up with CEL's constantly illuminated. |
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