4WD clunking '00 ranger

pimp-daddy · Jan 16, 2008

2000 ranger, 4.0L, auto tranny, electric switch transfer case, PVH mod done. My problem is that when i click it into 4wd, the indicator light comes on, it produces a vacuum for sure (almost left a huge hickey on my hand), but when i drive it makes a very loud CLUNK CLUNK CLUNK CLUNK CLUNK. it goes faster and slower depending on my speed. It worries me so i actually gutted the hubs just to make sure my driveshaft wouldn't spin and mess anything up. I'm hopin it's not the 4wd actuator motor because it's priced at about $300 and i don't have that kind of money. What do you guys think i should check? The front drive shaft will turn a about 1/2 a turn before it grabs. I need to find a friend to operate the switch while i try to diagnose from underneath..

any advice would be appreciated.

Buggyman · Jan 16, 2008

This is just a shot in the dark, but your hubs and/or wheel bearings could be toasted. I had a CLUNK CLUNK awhile back and the plastic clip holding the axle unto the wheel bearing had snapped and was allowing my axle shaft to clang around, destroying the wheel bearing and hub. I would pull both your hubs and make sure your axles are secured into the wheel bearings, there is a article in the tech library about how to use jig saw blades to remove the hub, it works great. If you need to replace the hubs, I used AVM manual hubs, its a great way to get rid of the shakey vacuum system and they appear to be built tougher then stock hubs.

Hope this helps....

pimp-daddy · Jan 17, 2008

thanks for the help.. but i think it's somewhere closer to the transfer case. i had both me and buddy holding our heads out the windows and listening and it sounded like it was coming from underneath us rather than from the wheels. hopefully i'll have it sold soon to some old guy who will never use the four wheel drive or something. i want it gone.

4x4RangerGuy · Jan 18, 2008

It could be that the chain is loose inside the transfer case, or one of the output bearings is gone.

pimp-daddy · Jan 22, 2008

buggyman, you were somewhat right. rather than the hubs being destroyed the axle input shaft came out right at the hub where the outer CV boot is connected. that explains the clunking noise. i think i better ask the repair shop for the old parts so i can build me a trophy.

4WD clunking '00 ranger

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