ok lol i do have a resivior its beside the mastercyl inside the fender nipple is there too now 2mro ill hook it up iv got two t s there beside it what one should go to it one t is connected to a hose that runs in the firewall with a wire harness the other t goes to intake i believe

 

I just had the same problem. I had one little section of vacuum line that was dry rotted coming off one of the "T" fittings that are below the vacuum ball. Replaced every inch of line in that area and she is working fine now. Look for something small in that area before you go tearing into the dash, that is a nightmare!!!
(to replace all the lines costs about $10, and you can do it in 2 minutes in the part store parking lot!)

 

ok lifted it up today nuetral 4hi wheel and driveshaft spun moved truck a few feet until it popped out lifted wheel spun driveshaft did not

 

i am having the same problem with the defrost and 4x4 disengaging. Ive found the hose that has completely come off near the master cylinder but cant seem to find where it goes. All the T-fittings are connected but one that looks like it should go to the firewall but i cant find a fitting anywhere. Its a 2001 zr2. any ideas please

 

look on the fender beside master master cylinder theres a nipple in the youll need a flashlight to see it im sure.

 

Common vacuum disconnect is from the tee coming out of the cabin splitting to the vacuum canister and the motor. From what I have seen it is usually from the tee to the vacuum canister. Tee is located at drivers side, inside engine compartment, to the right of brake booster. You can see where all the lines lead. The vacuum canister is located behind/underneath master brake cylinder inside fender on drivers side. You cannot see or feel the canister. But you can feel the canister nipple protrude into the engine compartment underneath the master brake cylinder. It is small and might feel like a bolt or screw.

 

Ill try looking in the morning and hopefully i can find it.....i checked for about an hour and couldnt find anything in the area. anyone have a picture for quicker reference?

 

ok is there a manual on here to change shift fork or collar im almost positive thats what it is

 

IMG_0658.jpg
Top one is a picture taken across motor from passenger side. It is the vacuum tube that disappears behind the master cylinder. If on the drivers fender, feel below/behind the right side of the master brake cylinder,

IMG_0663.jpg
Bottom is a shot in between the brake master cylinder and the body where the hood rests. Its hard to take a picture of something that cant be seen.

 

update new 4x4 switch still no 4x4 when on lift and in 4hi spin front wheel shaft spins hold shaft spin wheel other front spins when it pops out the shaft does not spin but front end is still engauged could the encoder motor not be turning it far enough


another update i got under ruck and was going to remove the encoder motor but i can hear it turning when swich is pushed