4x4 gremlin

[4runner1891]

i have a 94 4runner with 128k miles on it. it has the 3.0 v6, a/t and 4x4. a week or so ago i started having troubles with the front diff. i would start to here what sounds liek a relay opening and closing over and over again...sounds like its right behind the instrument cluster. and when it would start clicking, i would hear a sort of grinding in the front end and then all of the sudden, it would pop real hard and loud. so i took it to a mechanic frined of mine and he disconnected the vaccum hoses to the front diff that engaged the front axles...i think this realy controls the vaccum engaged front axles when i engage the t-case with the shifter lever. i need to find this realy...any ideas? or is this some other problem?
thanks

 

[hickory]

4X4

When you find that relay let me know. It is some where behind the cluster, have not found it myself yet. I had the same problem. I swicthed the hoses (top to bottom) then put new ones on. My unit works now but I think the actuator is getting worn and will have to rebuilt soon. I can tell my front diff is engaged when I hear the click (light burnt out)

 

[4runner1891]

i found th erelay that was clicking like crazy. it says fuel pump relay on it. i guess that isnt my 4x4 problem. however, the realy is taken outand it still runs fine. so im completely baffled.

 

[4runner1891]

Re: 4X4

When you find that relay let me know. It is some where behind the cluster, have not found it myself yet. I had the same problem. I swicthed the hoses (top to bottom) then put new ones on. My unit works now but I think the actuator is getting worn and will have to rebuilt soon. I can tell my front diff is engaged when I hear the click (light burnt out)

when you swapped the position of the hoses . did that fix the problem or did the new hoses fix it?