I need some help troubleshooting a lack of 4WD on my '92 4runner. No front end engagement in either 4high or 4low. Hopefully it will be something simple like a solinoid, fuse, or linkage. I don't yet have a manual for this Toyota, any recommendations?
Aloha,

 

Can't help much....manual hubs? are they engaged? Mostly wanted to welcom to you Yotatech!

 

Likely you have The Automatic Disconnecting Differential system, here is everything you wanted to know about ADD but were afraid to ask:

http://www.off-road.com/toyota/tech/add/index.htm

 

mine was doing the same thing...tested everything and the last thing i found was the cause...a little round check valve that wasn't working right that was inline to the intake and was hooked to the fender. most likely not enough vacuum....