4runner ABS '91 vs '95 ?

[Cube Dweller]

Getting close to starting on the Taco 3rd member w/ elocker install on my runner and a potential gotcha has come up:

On the 91 axle housing there is a single two wire molex plug that is routed thru the 3rd member. Talking to a friend who had a '93, these year runners had a single encoder and sensor located on the ring gear to sense a locked up condition.

With the lift kit I bought, the seller included a '95 axle housing. The '95 housing has two seperate leads w/ two seperate molex plugs that exit the housing assy on the backing plates. My guess is the later model controller(not sure if runners use seperate ABS controllers or if it's all part of the main controller) measured the difference in axle velocity as well as a locked up condition.

My plan is to use this housing with the Taco 3rd since you need to do some significant welding and cutting on the housing to get the 3rd to fit. This will allow me to keep driving the rig while I work on the housing, then just drop the old one out and install the new one when it's finished. Plus if I ever want to put it back to stock I can.

So, any ideas? Guess my options are:
1. not use the ABS at all. Not sure if this will mess w/ the ECU if the ABS is disconnected.
2. Plug one side of the ABS encoder on the '95 axle into the harness and see if it works. This forces me to essentially finish the project and if it doesn't work, lose a bunch of time in the process.
3. Swap over the ECU and or the ABS controller from a '95 to the '91. Don't know if this will work given differences in the overall vehicles, plus it's prob. $$$.

Help!

tony

 

[firetruck41]

Not sure what you should do, but 91 had rear ABS only (I assume one channel), IIRC 4 wheel ABS was offered in 94 or 95, which would be substantially different in all respects, ie. controller, and hardware.

 

[robinhood4x4]

I just installed (4 months ago) a non-abs third into my 93 4runner which originally came with rear ABS (1 sensor in the 3rd). For the time being, I unplugged the sensor and tied it out of the way. I also pulled the fuse for the ABS. My thinking for pulling the fuse is that the sensor will always think the tires are locked up giving me braking problems. I haven't tested that by plugging the fuse back in yet. I figure I just have a truck with no ABS now. There's at least one other guy I know of who has done the same, although I don't know if he pulled the fuse too, or not.

The only thing is the ABS light is always on now, kind of annoying. I need to disconnect that someday.

 

[bkg]

On the 91 axle housing there is a single two wire molex plug that is routed thru the 3rd member. Talking to a friend who had a '93, these year runners had a single encoder and sensor located on the ring gear to sense a locked up condition.

Our old 94 had this as well - rear wheel ABS only.

So, any ideas? Guess my options are:
1. not use the ABS at all. Not sure if this will mess w/ the ECU if the ABS is disconnected.
2. Plug one side of the ABS encoder on the '95 axle into the harness and see if it works. This forces me to essentially finish the project and if it doesn't work, lose a bunch of time in the process.
3. Swap over the ECU and or the ABS controller from a '95 to the '91. Don't know if this will work given differences in the overall vehicles, plus it's prob. $$$.

Help!

tony

I removed all of the ABS wiring/computers on our '94. There were a lot of stories perviously that you couldn't prevent the ABS light from coming on, but I never had a problem. I removed the computer, the solenoids, etc... Worked great.

Not sure if you can do #3, but I'd be interested to hear your results if you try it.