4wd problems...
#1
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4wd problems...
Last time i went out, my front differential would not engage and i have no front wheel drive at all. The 4wd selector shifts fine but i have no light go on and nothing seems to be engaging.Is this a problem that anyone has had??
#2
I'm guessing you have the ADD system, not manual locking hubs right? My 93 which had ADD, also had the 4wd light problem. It would flicker after using 4wd for a while or just not turn on at all, which caused the front diff not to engage. I ended up converting to manual hubs and defeating the ADD system(writeup here: http://www.4x4wire.com/toyota/tech/add/). The light would still act up, but at least my 4wd would work reliably now. I never found out what the problem was and still did it after all the vacuum components were removed, but guessing it was the switch in the front diff.
#3
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Originally Posted by ksig4runner
The 4wd selector shifts fine but i have no light go on and nothing seems to be engaging.
http://www.off-road.com/toyota/tech/add/index.htm should help with checking the system out.
The little green 4WD light not turning on means the ADD is not engaging, most likely a vacuum malfunction.
Last edited by mastacox; 07-06-2004 at 01:46 PM.
#4
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Also try driving for several minutes in 4Hi. When I first bought my 4Runner, the 4WD virtually hadn't ever been used, so it took about 5 miles to get it the light to stop flickering and for it to engage firmly.
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