1994.5 - 97 PCM difference? - Diesel Forum

Gmanak · 03-06-2006, 01:38 AM

SO whats the difference between the 94.5-97 PCM's.
I have a stock PCM on my 94.5. IS there a better PCM version out there and does anyone know the specific differences?

agsF2501 · 03-06-2006, 05:36 AM

Only difference is the programming in the pcm. The upgrade would be to a newer version. I know the preferred one for auto's is TDE1, not sure about hand-shakers though. First you need to know your PCM code. Ford routinely upgraded the PCM as trucks came in with problems that could be fixed with a flash.

Art

bbmotor · 03-06-2006, 09:27 AM

so we can just have our trucks reflashed to that code

THE_ALASKAN · 03-06-2006, 12:20 PM

Yes you can. Jody or the dealer can re-flash your PCM, or you can just have a chip burned to the better PCM code. i.e. you can have a 95 auto you can have a 97 TDE1 4 page, 6 possition chip burned so your 95 will have the power and shifting parameters of the 97's.
Since Snowgo has a 94.5 that means it's a 5 speed because if I remember right they did not make a 94.5 auto, only a 5 speed was available on the first PSD's.
JIM

PSDfreak · 03-06-2006, 01:25 PM

Also...with the older trucks (94.5-95) that are OBD I....having your PCM reflashed to a later calibration (96-97) you can then use OBD II diagnostic equipment...

-Casey

ryanPSD · 03-06-2006, 04:10 PM

TDE1 is I believe the latest and greatest. Though made for an auto, you can run it without issue in a 5spd (I am).

BadTrukRisin · 03-06-2006, 07:57 PM

Ryan, how much difference between TDE1 and MLE1 if you know? [img]/ubbthreads/images/graemlins/biggrin.gif[/img]
Bud

ryanPSD · 03-07-2006, 12:07 AM

Dunno, I went from AUG6 with no chip to TDE1 with a chip... so I can't really say much about the differences between the two, except that it works. [img]/ubbthreads/images/graemlins/confused.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]

Gmanak · 03-07-2006, 06:08 AM

Thanks for all the info guys.
Im not sure what I have in the truck. I guess i would have to pull it out to check it. It does have the port under the dash. WOuld a code reader tell you the version when plugged in?

SO, if its still original PCM whats the best one to upgrade to?

I have the 5sp ZF42.

ltfox · 03-07-2006, 07:54 AM

Your code should be BEG6 or BEG8 if its the original pcm. You should'nt need to upgrade your pcm. It looks like in your sig that you have a ts chip. Most chips will give you the most current pcm settings. befroe I got my chip, I played with a few PCM's in my truck and could'nt see any difference in any different pcm's. With a auto its a different story with different shifting patterns.

Gmanak · 03-07-2006, 04:48 PM

94 PSD, That I did not know. SInce I put this engine in i havent had any trouble or need to read codes. Just poor mileage due to warm up idling, #1 fuel and hubs locked in all the time.

ITs running good but I just cant quit fiddling with it.

gw66 · 03-07-2006, 07:34 PM

so, who is this jody person? my tranny shifts funky. dealer reflashed it, shifted great. shut it off, started it later. and now it shifts like crap again. any help?