not locking into four wheel drive
#1
05-02-2004 | 03:00 PM
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Joined: Apr 2004
Posts: 47
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not locking into four wheel drive
I found something out the hard way yesterday. I was at the dunes and got into a bad spot, tried to put my truck in 4 wheel drive and the front end is not locking up. When I lock in the transfer case changes the gearing it locks into the low gears but the front end is not locking. I had a 3" body lift installed about a year ago but the 4x4 has worked since then. I noticed about 6 months ago that in 2 wheel drive there is a slight grinding sound. As soon as you touch it, it stops. Maybe too close to gears. I am not sure what the problem is. The worst part is I had to be towed out by a chevy!!! any help?
#4
05-04-2004 | 05:28 PM
Junior Member
Joined: Sep 2001
Posts: 7
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From: san diego
Hi BigBobF150,
If I may make an assumption....
You have a manual shift transfercase? Assuming this is the case, you might consider checking out the front axle. On your axle will be a vacuum 'motor' (which is really a big vacuum pot). This uses, of course, vacuum supplied by two vacuum solenoids located under the hood, near the firewall on the passenger side of the vehicle.
Using proper safety precautions and an assistant, you may wish to inspect the operation of the motor by observing whether or not the shaft connected to it moves in or out with the position of your transfer case shift motor. (You may need to remove a plastic cover that hides/protects the vacuum pot)..... Assuming it does not, check for vacuum to the motor, check the solenoids and rubber vacuum lines. I understand this is a common failure, and that aftermarket parts are available should you wish to use them.
My problem was with the electric shift motor on the transfer case, but I did go through these steps while troubleshooting.
If I may make an assumption....
You have a manual shift transfercase? Assuming this is the case, you might consider checking out the front axle. On your axle will be a vacuum 'motor' (which is really a big vacuum pot). This uses, of course, vacuum supplied by two vacuum solenoids located under the hood, near the firewall on the passenger side of the vehicle.
Using proper safety precautions and an assistant, you may wish to inspect the operation of the motor by observing whether or not the shaft connected to it moves in or out with the position of your transfer case shift motor. (You may need to remove a plastic cover that hides/protects the vacuum pot)..... Assuming it does not, check for vacuum to the motor, check the solenoids and rubber vacuum lines. I understand this is a common failure, and that aftermarket parts are available should you wish to use them.
My problem was with the electric shift motor on the transfer case, but I did go through these steps while troubleshooting.