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Old Apr 23, 2014 | 10:22 PM
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pcm's

Anyone know if pcms can be reprogrammed? Need a new one and cam get a screaming deal on one from an auto and I have a stick came from same year. Thanks in advance
 
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Old Apr 23, 2014 | 10:45 PM
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They can be reprogrammed but I think they have to have the same vdh code or something to be compatible. I would think same year same truck would interchange. You could send a email to DP tuner or php. Maybe some one who knows more than me will chime in.
 
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Old Apr 24, 2014 | 06:21 AM
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PCM's can be reprogrammed, but with limitations. They have to be of the same DPC family. Going from an auto to a manual, they are not the same family. In fact, the pinouts are slightly different on the PCM's. For example, a PCM for a manual transmission equipped truck has an input for coolant temps, where the automatic does not.

In a nutshell, it won't work.
 
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Old Apr 24, 2014 | 02:27 PM
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Originally Posted by Pocket
PCM's can be reprogrammed, but with limitations. They have to be of the same DPC family. Going from an auto to a manual, they are not the same family. In fact, the pinouts are slightly different on the PCM's. For example, a PCM for a manual transmission equipped truck has an input for coolant temps, where the automatic does not.

In a nutshell, it won't work.
Good to know, So does that mean I can see ECT on my Infinity?
 
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Old Apr 24, 2014 | 05:52 PM
  #5  
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Originally Posted by cjgray1974
Good to know, So does that mean I can see ECT on my Infinity?
You should check an let us know, so I can add to the ever-growing list of reasons why I should've held out for a ZF-6
 
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Old Apr 25, 2014 | 07:31 AM
  #6  
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Originally Posted by cjgray1974
Good to know, So does that mean I can see ECT on my Infinity?
I have no idea what the Infinity will and won't read. Never touched it.
 
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Old Apr 25, 2014 | 08:12 AM
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I have plenty of data from Infinity, plus I have wiring diagrams for the trucks. [LINK]

The ECT is not on the OBDII network, except for the manual trucks alone. Infinity (and all other scan tools) can only monitor what is on the OBDII network - unless hardware is purchased and installed for additional sensor inputs, like EGT, ECT, Fuel Pressure, etc....

So many people get hung up on ECT, this is from our gassing life. Until recently, that engine coolant gauge was the only way we knew how warm the engine was getting... so it has always been critical. Now we have Engine Oil Temperature (as well as High Oil Pressure "ICP") available on the OBDII network, and that's just as critical as the engine coolant temperature. We need to know when we're cooking our oil or engine, plus that's the medium that operates our injectors.

The argument for knowing the ECT would be the ability to detect a bad thermostat, a coolant leak, or a cracked up - if the injector allows combustion gasses into the coolant. We already have a gauge on the dash for those symptoms, and a glimpse at the degas bottle will confirm the gauge reading, or let us know if something is wrong with the sensor.
 
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