Posted by Brent in Nevada [206.174.175.122] on Sunday, December 27, 2009 at 17:31:03 :
I have a 1987 Dodge W250 4X4. When I shift into four wheel drive and get to around 20 mph I hear a clunk sound and the four wheel drive indicator light goes out and then clunk again. If I don't slow down to about 5 mph this cycle will continue I have checked the vacuum motor on the front axle and it seems to be working OK (static) There is a bunch of vacuum hoses that run to the top of the transfer case. Any help would sure be appreciated. Thanks in advance.
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