Well I need to bypass my ECM/TCM control of my AW4 so it doesn't downshift when I force it into open loop due to the turbo. (don't ask, its a long story and has to do with the air/fuel ratio in closed loop.)
I made this simple mechanical shifter that actuates 2 normally open/closed switches. I made this with some crap I had laying around and some hardware store items.
This is a rough idea of what it will look like but this exactly how it works.
Its about 4.25"x3"x2" ish.
Its bascially just a rod welded to a big fender washer that I drilled recesses into. I used a spring and a ball bearing to give it a positive shift feel. Its pretty smooth and does have a good solid stopping point between gears.
I cut the rod and ground it down to center it. (no I didn't measure it) Then I TIG'd it on. The spacers are some 1/2 copper tubing I found in my basement.
I used the same rod and cut pieces off and welded them to the fender washer to hit the switches in correct order to shift the tranny.
Here is the schematic that you need to use to get the order correct and wired up. I printed the TCM pinout from the Shopkey at the shop.
Here is a quick vid of how it works. It will obviously be bolted down when in use but you get the idea.
I need to make a nice cover for it and get rid of the bolt that is the pivot and get a 1/2 rod and some locking collars so there won't be bolts hanging out of the side. I am also going to incorporate a lighted switch on the cover to actuate the convert lock up.
I made this simple mechanical shifter that actuates 2 normally open/closed switches. I made this with some crap I had laying around and some hardware store items.
This is a rough idea of what it will look like but this exactly how it works.
Its about 4.25"x3"x2" ish.
Its bascially just a rod welded to a big fender washer that I drilled recesses into. I used a spring and a ball bearing to give it a positive shift feel. Its pretty smooth and does have a good solid stopping point between gears.
I cut the rod and ground it down to center it. (no I didn't measure it) Then I TIG'd it on. The spacers are some 1/2 copper tubing I found in my basement.
I used the same rod and cut pieces off and welded them to the fender washer to hit the switches in correct order to shift the tranny.
Here is the schematic that you need to use to get the order correct and wired up. I printed the TCM pinout from the Shopkey at the shop.
Here is a quick vid of how it works. It will obviously be bolted down when in use but you get the idea.
I need to make a nice cover for it and get rid of the bolt that is the pivot and get a 1/2 rod and some locking collars so there won't be bolts hanging out of the side. I am also going to incorporate a lighted switch on the cover to actuate the convert lock up.
