KonaYota

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,

ianshoots

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

4Crawler

iTrader: (3)

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

callmej75

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....