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Idahome
Joined: Wed May 2nd, 2018
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James drove the sport trac yesterday hoooray! short test drive
reveals the speedometer odo cruise and OD on off button inop, as I suspected.
You see the 02+ sport trac uses the engines pcm to "buff" the vss signal, the truck uses that buffed signal to work the speedometer, odo, cruise control and ABS brakes
In the 5.0 Explorer the PCM is not part of the signal and performs no VSS calculations (buffering)
So there are two acceptable ways to fix this:
Wire in a Ranger GEM module from 99-01.5 4 bangers (Not gonna happen and Ill tell you why)
or
Use this little gem from dakota Digital
https://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=126/mode=prod/prd126.htm
We will be using the Dakota digital interface
If we were to try and use the ranger gem we might lose controls of the power rear windows and rear doors, things are a little different on a sport trac body then a ranger body and the GEM is kind of a "body computer"
I think you could wire up the ranger gem so it just performs the one VSS signal buffering "act" but finding that 99-01.5 gem, its wiring pigtails and all the wiring book info for that GEM can get costly and take lots of time..... Then I would still have to find a place to mount it and probably piggyback many of the GEM wires to include boththe sport trac gem and the ranger gem = no thanks.
So the dakota box is a far better solution, and its $81 on Summit.......
The sport trac runs and drives awesome!!! Soon it will be even better :)
Stay tuned!
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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks