Temporary Archives >> 7.3L Power Stroke Engine and Drivetrain

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TWC88
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Member # 15929
Reged: 08/24/01
Posts: 286
Loc: Eastern Mass
ECM Code
#2285139 - 02/25/05 02:46 PM

A freind of mine has a 99 with a Manual and he would like to buy a chip. I know the truck has been flashed and I have no idea what code it is. How can I/we figure it out?

Tom

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Re: ECM Code new
#2285310 - 02/25/05 05:02 PM

The only sure way is to plug a good scanner/tester into the OBD-II port and "read" the PCM part number. Then go to the PCM Code table in the '94-'97 FAQ and translate that part number into the current PCM code. http://www.thedieselstop.com/faq/9497faq/geninfo/pcmcodes.php3

Ford calls it the Program Control Module (PCM). Others might call it the Electonic Control Module (ECM). Either way, it's "the computer".

TWC88
Member
Member # 15929
Reged: 08/24/01
Posts: 286
Loc: Eastern Mass
Re: ECM Code new
#2287822 - 02/27/05 08:16 AM

smokey

The only number I could find is XU2F12A650PB. If I translated this correctly it come out to be ZHL1 code. This is all good but chart also says it was for a 99 F 450/550/650 and this truck is a 350.

Tom

SmokeyWrenModerator
Administrator
Member # 957
Reged: 04/26/99
Posts: 21744
Loc: Midland County,TX, USA
Re: ECM Code new
#2287869 - 02/27/05 09:28 AM

Quote:

The only number I could find is XU2F12A650PB. If I translated this correctly it come out to be ZHL1 code. This is all good but chart also says it was for a 99 F 450/550/650 and this truck is a 350.




No problem. There is no difference in the engines in the F-350 and the F-450/F-550. I don't know why the chart makes a distinction. When my PCM burned out last summer, the dealer had to order one. Ford sent an MRT3, which is also for an F-450/550/650. But my truck runs good with it, and my Evolution programmer seems to be happy with it.

Apparently your friend's truck also has a different PCM than the original one it came with from the factory. So it's a good thing you didn't use some other technique to determine the original PCM code.

What doesn't make sense is the F-650 is quite a bit different than the F-450/550. It has lower HP and RPM, but higher torque. So I don't understand how the same PCM could control the PSD in both an F-450 and an F-650. So I certaintly don't claim to have all the answers.

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