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Need a PCM (computer)

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Old Apr 7, 2020 | 01:47 PM
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Default Need a PCM (computer)

1993 Dodge Dakota, LE, 5.2L, Two-Wheel Drive, original owner

After years of trying to figure out why my truck inexplicably and randomly conks out, I have concluded my PCM has a bad connection (long story). Question is, where do I find one that I can feel reasonably sure is in good condition? Refurb shop? Boneyard? Other? Any suggestions?
 
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Old Apr 7, 2020 | 04:47 PM
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Too late. I'm sending it to Module Experts In Jax, FL to be diagnosed/repaired. $180. God be with me.
 
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Old Apr 7, 2020 | 05:42 PM
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Justin Case https://www.rockauto.com/en/catalog/...computer),2896
 
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Old Apr 7, 2020 | 06:00 PM
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Thank you!
 
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Old Apr 7, 2020 | 08:25 PM
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Module Experts claim they can deal with intermittent PCM problems. We'll see.
 
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Old Apr 19, 2020 | 12:25 PM
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Module Experts diagnosed my PCM and said the microprocessor is bad. They cannot replace just the processor as it is a part of an entire board that is no longer available. So I'm getting a remanufactured PCM instead. $500 (they applied the $150 I already paid for the diagnosis toward the reman unit).
 
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Old Apr 19, 2020 | 12:35 PM
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Uhhh ...

68HC11 CPUs are available for about $50 or so.

68HC05s (like my 1988 uses) are down to $5, and are through hole.

I'm not so sure about "is no longer available"; rework tools are available to remove/install the SMD 68HC11 CPU for not a lot (and if I were working on CPUs, I'd have them!)

Unless it's a "firmware on chip" variant for yours, unlike my 1988, where it's in a separate ROM chip.

Actually, on notes for the SBEC, I bet it's ROM'ed separately, or else there wouldn't be ROM replacement boards for the turbo versions.

RwP
 
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Old Apr 19, 2020 | 12:45 PM
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Originally Posted by RalphP
Uhhh ...

68HC11 CPUs are available for about $50 or so.

68HC05s (like my 1988 uses) are down to $5, and are through hole.

I'm not so sure about "is no longer available"; rework tools are available to remove/install the SMD 68HC11 CPU for not a lot (and if I were working on CPUs, I'd have them!)

Unless it's a "firmware on chip" variant for yours, unlike my 1988, where it's in a separate ROM chip.

Actually, on notes for the SBEC, I bet it's ROM'ed separately, or else there wouldn't be ROM replacement boards for the turbo versions.

RwP
Here's what I was told, Ralph:"Diagnostics are completed on the Dakota module, and this unit is beyond repair due to the issue being traced to the main processor (computer chip) - not a driver. The chip is not able to be replaced on this module, as it is made into the circuit board assembly, so you would need to replace the unit to correct the issue."
 
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Old Apr 19, 2020 | 03:37 PM
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Originally Posted by bronze
Here's what I was told, Ralph:"Diagnostics are completed on the Dakota module, and this unit is beyond repair due to the issue being traced to the main processor (computer chip) - not a driver. The chip is not able to be replaced on this module, as it is made into the circuit board assembly, so you would need to replace the unit to correct the issue."
*dry* If it's not socketed, it's "made into the circuit board assembly" by some definitions. It's not by the electronics technician definitions, since with the proper rework toolkit we can replace it. Matter of fact, that's what a considerable portion of ETs do for a living - board level repair.

Folks either don't do component level work, or they were bull****ting you.

RwP
 
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Old Apr 19, 2020 | 05:27 PM
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And I have no way of knowing. They got me by the ***** whether I like it or not and no one knows that more than me. This is why I work on my own vehicles as much as I can. I TRUST NO ONE!!! Sadly, there are times I have no choice but to rely on outside sources. I inherently distrust them from the jump.
 
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