- Aug 25, 2012
- 955
Hey all, I just want to double check with everyone on whether or not my 4wd is operating properly.
I have my truck up on 4 jack stands in the driveway since I have been cleaning up the frame and I put POR15 on it to try and slow down the rusting on it so I can get hopefully 6 more years out of it before I need to toss the truck. Anyway, I wanted to double check the operation of the 4wd and here is what I found.
1.) I have no CEL codes or service 4wd codes, when I turn the 4wd selector switch, everything changes like it should when I put it between 2wd, a4wd, 4hi, 4lo, n.
2.) I had placed the truck in 2hi and put it into gear and only my left rear wheel spun (that part I know is normal because I don't have a LS or a locker in the rear diff)
3.) I stopped the wheel with the brakes and then switched to 4hi and put it back into gear. When I did this, the left rear wheel was spinning but neither of my front wheels were spinning. I could hear a little grinding noise that can be best described as when someone grinds their gears when shifting a semi
4.) I stopped the wheel and placed my truck in 4lo and then back into gear and neither front wheels were spinning and the same gear grinding noise was present.
5.) While the rear wheel was spinning freely, I decided to grab my front tire and move it and if I move it, the grinding noise goes away but as soon as I stop the wheel, the grinding noise comes back.
6.) The front and rear driveshafts were both spinning in 4hi, a4wd and 4lo so the transfercase seems to be functioning as it should.
7.) I know this part is not recommended at all but a few months ago I placed my truck in 4hi and turned into a parking spot and you could feel it getting bound up like 4 wheel drive normally does when you turn the wheel sharp. I only did that until I felt the binding and then switched back to 2hi and everything was fine.
Does this sound like normal operation of the 4 wheel drive or do I have a toasted front diff?
I have my truck up on 4 jack stands in the driveway since I have been cleaning up the frame and I put POR15 on it to try and slow down the rusting on it so I can get hopefully 6 more years out of it before I need to toss the truck. Anyway, I wanted to double check the operation of the 4wd and here is what I found.
1.) I have no CEL codes or service 4wd codes, when I turn the 4wd selector switch, everything changes like it should when I put it between 2wd, a4wd, 4hi, 4lo, n.
2.) I had placed the truck in 2hi and put it into gear and only my left rear wheel spun (that part I know is normal because I don't have a LS or a locker in the rear diff)
3.) I stopped the wheel with the brakes and then switched to 4hi and put it back into gear. When I did this, the left rear wheel was spinning but neither of my front wheels were spinning. I could hear a little grinding noise that can be best described as when someone grinds their gears when shifting a semi
4.) I stopped the wheel and placed my truck in 4lo and then back into gear and neither front wheels were spinning and the same gear grinding noise was present.
5.) While the rear wheel was spinning freely, I decided to grab my front tire and move it and if I move it, the grinding noise goes away but as soon as I stop the wheel, the grinding noise comes back.
6.) The front and rear driveshafts were both spinning in 4hi, a4wd and 4lo so the transfercase seems to be functioning as it should.
7.) I know this part is not recommended at all but a few months ago I placed my truck in 4hi and turned into a parking spot and you could feel it getting bound up like 4 wheel drive normally does when you turn the wheel sharp. I only did that until I felt the binding and then switched back to 2hi and everything was fine.
Does this sound like normal operation of the 4 wheel drive or do I have a toasted front diff?