For those of you who have...
A. Contemplated replacing the existing engine in your vehicle
B. Actually gone ahead and done what you THINK is an effective engine replacement
C. Contemplated using a new, non-stock engine to upgrade/replace your existing stock engine
D. Replace your PCM for whatever reason
Note the following:
There is a very specific matching of engine, PCM, transmission, and TCM that must be attended to. If you ignore this, you are letting yourself in for a whole lot of headaches, wasted time and wasted money.
I am attaching a Chrysler PCM/TCM/BCM calibration list that I stumbled across somewhere this morning. Unfortunately, I copied the doc to my PC with a new filename that made sense in plain english, and then accidentally closed the browser session before copying the URL that pointed to it. If I can find it again I will add that link to this post.
What this list will show you is the nit-picking matching of 100s of specific matches. If you stray from the explicit matching part numbers that are specific to your stock vehicle, you are screwed.
If anyone out there refutes that statement, let's hear it. Examples of 100% success in using mismatched engines/pcms/transmissions/tcms is a very interesting scenario and I would really like to do some q&a with anyone that pulled that off with 100% success. From what I can see in the documentation such a scenario should be impossible.
Anyway, my stock vehicle spec consists of "2003 KJ 3.7L AUTO NLEV" calibration, relative to an original PCM part number "56044195AG", with a matching "2003 KJ 3.7L EATX3B" calibration relative to an original TCM part number "56044192AE". American market KJ with 3.7L and 4wd 42RLE. That will give you all the search criteria needed to sift through the attachment to understand how specific this matching thing is.
The really intimidating thing is that if you search for the newest "new part" variations for either of those parts (56044195AH and 56044195AH respectively) you will not find them anywhere else in the list, which means its that specific part or you end up with all kinds of troubleshooting issues when nothing works correctly... if you can even get the vehicle started with mismatched parts.
A. Contemplated replacing the existing engine in your vehicle
B. Actually gone ahead and done what you THINK is an effective engine replacement
C. Contemplated using a new, non-stock engine to upgrade/replace your existing stock engine
D. Replace your PCM for whatever reason
Note the following:
There is a very specific matching of engine, PCM, transmission, and TCM that must be attended to. If you ignore this, you are letting yourself in for a whole lot of headaches, wasted time and wasted money.
I am attaching a Chrysler PCM/TCM/BCM calibration list that I stumbled across somewhere this morning. Unfortunately, I copied the doc to my PC with a new filename that made sense in plain english, and then accidentally closed the browser session before copying the URL that pointed to it. If I can find it again I will add that link to this post.
What this list will show you is the nit-picking matching of 100s of specific matches. If you stray from the explicit matching part numbers that are specific to your stock vehicle, you are screwed.
If anyone out there refutes that statement, let's hear it. Examples of 100% success in using mismatched engines/pcms/transmissions/tcms is a very interesting scenario and I would really like to do some q&a with anyone that pulled that off with 100% success. From what I can see in the documentation such a scenario should be impossible.
Anyway, my stock vehicle spec consists of "2003 KJ 3.7L AUTO NLEV" calibration, relative to an original PCM part number "56044195AG", with a matching "2003 KJ 3.7L EATX3B" calibration relative to an original TCM part number "56044192AE". American market KJ with 3.7L and 4wd 42RLE. That will give you all the search criteria needed to sift through the attachment to understand how specific this matching thing is.
The really intimidating thing is that if you search for the newest "new part" variations for either of those parts (56044195AH and 56044195AH respectively) you will not find them anywhere else in the list, which means its that specific part or you end up with all kinds of troubleshooting issues when nothing works correctly... if you can even get the vehicle started with mismatched parts.
