4WD question
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Fleet Mechanic
Joined: May 2005
Posts: 1,739
Likes: 14
From: Vale, NC
4WD question
Yesterday I had the need to put the truck in 4wd. Worked fine and got me out. Later I was in the street testing it just cause I hadn't used it lately. It seemed to engage fine, the light on the dash appeared and you could defintely feel the change in the motion. When I turned around in the cul-de-sac the rear wheels seemed partially locked up. They were chirpping and I was going super slow. I shifted to 4 Lo and no change. Back to 4 Hi no change. Striaghtened the truck out and it was really bogged down like the whelles were locked. Went back to 2wd and it seemed to not want to disengage. Put it in reverse backed up a bit, then forward and it seemed to disengage and run fine again. Crawled under and saw nothing leaking or visually messed up.
Any suggestions?
Any suggestions?
Elder User
Joined: Jan 2008
Posts: 589
Likes: 0
From: Stockton Ca.
Don't use your 4 wheel drive on dry blacktop, especially in turns. The wheels need to be able to slip (snow, ice, mud etc.) or you could damage the transfer case.
Hotshot
Joined: Jun 2003
Posts: 12,338
Likes: 4,349
From: SW VA
If you're lucky, all it leads to is slipping tires or even a broken U-joint. Just hope your T-case doesn't shatter ($$$$) and leave your truck stranded.
Laughing Gas
Joined: Jan 2006
Posts: 1,098
Likes: 11
From: Minnesota
As the guys said, stay off solid pavement if you are turning the wheels. Most of the problems I see are either the 2 small vacuum solenoids on the firewall behind the battery, or at the front diff. where the vacuum lines hook to a vacuum type switch that moves a fork that locks and unlocks the front end. Really simple to troubleshoot, most of the time it will free itself up after locking and un-locking, backing up, etc.... a half dozen times. I had the same problem, cleared up after a few engage-dis-engage modes. I now make sure to run the 4-wheel for a few miles on straight road at each oil change. My friend owns a tranny shop, he always says more 4-wheel problems occur due to non-use than mis-use.
