- Joined
- Sep 1, 2021
- Messages
- 13
- Reaction score
- 5
- Location
- Usa
- Vehicle Year
- 2001
- Make / Model
- Explorer Sport
- Engine Type
- 4.0 V6
- Transmission
- Automatic
- 2WD / 4WD
- 2WD
As the title states ‘90 Supercab 2.9 2wd bad FM146 swapping to M50D-R1HD. Here is the the meat of the subject, I will eventually be doing an SAS conversion as not a fan of 2wd and since I have to replace the transmission already now is the time to get the 4wd trans and transfer case.
I want to put a BW 1354M behind the M50D as there currently is no provisions nor do I want an electronic TC.
The real question is where does the computer obtain the manual TC position input, obviously from the TC but what pin does it come in on the computer, and what process lights the dash lights for 4wd? As manual TCs doesn’t require the TC controller, are those inputs sent directly to the PCM and then to the indicators or does it even go to the PCM? If no inputs are utilized by the PCM would ther be an issue with utilizing the 2wd PCM?im not sure if the PCM uses those inputs to adjust idle, mixture, indicated speed.
Please forgive all the stupid questions as I am coming from an S10 world where everything runs through a BCM to the PCM and Chevy made it as difficult as possible to modify BCM programming as possible. I added all of the factory fog lamps and associated wiring to my s10 and still had to pay a Chevy dealer $150 to plug in the computer to tell it that it now had fog lamps.
I want to put a BW 1354M behind the M50D as there currently is no provisions nor do I want an electronic TC.
The real question is where does the computer obtain the manual TC position input, obviously from the TC but what pin does it come in on the computer, and what process lights the dash lights for 4wd? As manual TCs doesn’t require the TC controller, are those inputs sent directly to the PCM and then to the indicators or does it even go to the PCM? If no inputs are utilized by the PCM would ther be an issue with utilizing the 2wd PCM?im not sure if the PCM uses those inputs to adjust idle, mixture, indicated speed.
Please forgive all the stupid questions as I am coming from an S10 world where everything runs through a BCM to the PCM and Chevy made it as difficult as possible to modify BCM programming as possible. I added all of the factory fog lamps and associated wiring to my s10 and still had to pay a Chevy dealer $150 to plug in the computer to tell it that it now had fog lamps.