Engine stumbling under part-throttle (5.8)

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Jul 23, 2009 | 10:31 AM

#16

davelength

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Joined: Aug 2007

Posts: 159

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The part number for the one that was in mine was:
F4TF-12A650-NA

I am sure someone can dissect this part number, as it will be somewhat specific to the vehicle. IIRC, the second character is the manufacture date (4 = 1994). I believe the 12A650 is the same for all PCMs for our trucks. The NA on mine was related to the program code, mine being a California PCM. You can see more about program codes at:
http://fordfuelinjection.com/?p=17

I would just pull your computer and see what info it has on it. It may be worth just heading to your local junkyard and see if you can get a cheap used one to test out. My understanding is that you should be fine as long as you get a PCM from a similar year vehicle with the same engine & transmission as yours.

HTH,
Dave

Aug 19, 2009 | 09:54 PM

#17

ky_ace

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Joined: Mar 2008

Posts: 21

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Thanks, I might have to pull mine and check that out. I've posted a new thread as it has started running MUCH worse and the cat is glowing red now. I haven't driven it much since posting that last time. I'll pull the computer and head to the yard Friday I guess.

Thanks again,

BM