Hello,

I have a 1999 Ford Ranger Xlt 3.0 V6. My 4x4 will not engage and I can't figure out why. It turn the *** to 4x4 high and the light says that it is in, but the front wont lock in. The front drive shaft does spin and if I try to spin it while it is in 4x4 I cant budge it. So i jacked up the front end and both tires will spin without spinning the front drive shaft. Is this a problem with my hubs, or is there a vacuum system on this that I should check. I looked at the lines on both tires but they look good. Also is there a pump that I should check or anything you could think of?

Thanks in advance,
Tyler

 

Sounds like the pulse vacuum hubs are leaking. Once they go **** up it's not worth the money or trouble fixing them. Swap your hubs out for the rugged ridge/ AVM manual hubs.

 

Is there any way I can check to see if it is the PVH leaking?

 

http://www.therangerstation.com/foru...ad.php?t=72000

Start there. Then google. Good luck.