91.5 ecm
#1
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Thread Starter
91.5 ecm
Are their only 2 variations of the 91.5 ECM? One for manuals and one for autos?
I tried searching parts places and other sources, but no one listed any OEM part numbers. Some "repair" shops inferred that there might be while the auto parts stores only list auto or manual transmissions as any difference.
I tried searching parts places and other sources, but no one listed any OEM part numbers. Some "repair" shops inferred that there might be while the auto parts stores only list auto or manual transmissions as any difference.
#3
Registered User
Yes there are only the two...but you can use an auto one on a manual truck if you ground the neutral safety switch wire. At least that is what I have found by reading through the archives here on the board.
Also a couple people have said they have used a PCM from a 94/95 cummins truck too.
Also a couple people have said they have used a PCM from a 94/95 cummins truck too.
#4
Registered User
I have an ECM in my manual truck that was out of an auto. It works just fine until you bring up the codes. It registers a code saying that my over drive doesn't work.Not a big deal.
#6
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Thread Starter
I was wondering if both ECMs had cruise control built in, just not used on models sold without. All the wiring is their, I was hoping all I needed to do is ad the switches and servo.
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#10
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I have all the other parts off a 93, so it won't cost me anything but time to find out if the cruise will work or not.
#11
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