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‘90 Supercab 2.9 2wd bad FM146 swapping to M50D-R1HD


Roadings

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U.S. Military - Veteran
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1990
Make / Model
Ford ranger xlt
Transmission
Manual
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.
 


Angie

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"had to pay a Chevy dealer $150 to plug in the computer to tell it that it now had fog lamps. "

Difference between ford guys and chevy guys....

Ford guy would just buy a $5.00 throw switch and manually turn on the fog lights....

Cheers and welcome aboard the crazy train of being here and good luck with the build.
 

Roadings

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U.S. Military - Veteran
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Usa
Vehicle Year
1990
Make / Model
Ford ranger xlt
Transmission
Manual
"had to pay a Chevy dealer $150 to plug in the computer to tell it that it now had fog lamps. "

Difference between ford guys and chevy guys....

Ford guy would just buy a $5.00 throw switch and manually turn on the fog lights....

Cheers and welcome aboard the crazy train of being here and good luck with the build.

The wife wanted it all factory so that’s what i did. I hated that damn truck. Too much electronic crap that had to “talk” to the computer and if the internal VIN didn’t match or the computer didn’t know to look for that particular module it didn’t talk.
 

Angie

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V8 Engine Swap
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Location
Vancouver area BC Canada
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92 & 83 project
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Ford
Engine Type
V8
Engine Size
4.0L 302
Transmission
Automatic
Sounds like the wife's 05 Tahoe .... myself i hate working on it... but she loves the thing... cheers
 

Roadings

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U.S. Military - Veteran
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Usa
Vehicle Year
1990
Make / Model
Ford ranger xlt
Transmission
Manual
The S10 was a 98 4cyl 5spd man 2wd supercab. While I was on one of my many deployments a rat chewed up the main harness pretty damn bad. Chevy in its infinite wisdom did away with the firewall plug and made the harness all one piece with a separate engine harness. As it was a transition year finding a replacement harness was damn near impossible and I wasn’t about to perform 146 solder joints in a 6” span I had to find a suitable replacement. I became intimate with 3 different year harnesses while I pieced a new one together. The driveway was an explosion of wire, electrical tape, wire split conduit and blood. I’m not above getting down and dirty with wiring. Believe it or not, after “rebuilding” my harness I drove that truck another 4 years with no problems.
 

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