Happy new year, forum.
I just today started to notice a significant whine coming from my 05 TJ. It's drive train related, since I can't reproduce the sound in neutral and does not happen at any specific speed.
My Wranger has an NP231 (w/Advance Adapters SYE, installed a few years ago) and an NSG370. When passing 2000 or 2500 RPM, a whine starts that changes pitch with the RPM. Pressing the clutch makes the sound wind down with the RPMs, and is not perceptible below about 2000RPM or in neutral (both clutch down and clutch up with stick in neutral) at any RPM. I've observed this in 3rd and 4th gear. I've checked for leaks and found none. However, I am going to get under it tomorrow when I have some daylight and make sure both the transmission and transfer case are full. I'm also going to try and capture audio of the sound afterwards and see if I can get it to reproduce in 1st and 2nd gear as well.
Two notes to go along with this:
1. I'm currently replacing the u-joints in the front drive shaft, so that is not currently installed in the vehicle. We're strictly talking 2WD at the moment.
2. I've noticed that the clutch has been stuttering slightly when starting from a full stop since the temperature has dropped. This behavior goes away after the first or second time. Other than that, I haven't noticed any slippage and it shifts smoothly, but I've owned the vehicle for about 100k miles, so I'm sure it's long probably overdue for a fresh clutch.
I've searched YouTube to find other examples of the noise, but haven't been able to locate one. Everything I've watched has been grinding/banging, or vacuum related. The only video I found that might be related was a guy who noticed that the bearing race in the transfer case cover had been spinning in the housing and making a loud whining/whistling noise, but with the transfer case in 2H (I double checked to make sure) and the front drive shaft removed, I don't even see how that bearing would even be spinning or under any kind of load. At least not the front one.
Anybody have any insights?
I just today started to notice a significant whine coming from my 05 TJ. It's drive train related, since I can't reproduce the sound in neutral and does not happen at any specific speed.
My Wranger has an NP231 (w/Advance Adapters SYE, installed a few years ago) and an NSG370. When passing 2000 or 2500 RPM, a whine starts that changes pitch with the RPM. Pressing the clutch makes the sound wind down with the RPMs, and is not perceptible below about 2000RPM or in neutral (both clutch down and clutch up with stick in neutral) at any RPM. I've observed this in 3rd and 4th gear. I've checked for leaks and found none. However, I am going to get under it tomorrow when I have some daylight and make sure both the transmission and transfer case are full. I'm also going to try and capture audio of the sound afterwards and see if I can get it to reproduce in 1st and 2nd gear as well.
Two notes to go along with this:
1. I'm currently replacing the u-joints in the front drive shaft, so that is not currently installed in the vehicle. We're strictly talking 2WD at the moment.
2. I've noticed that the clutch has been stuttering slightly when starting from a full stop since the temperature has dropped. This behavior goes away after the first or second time. Other than that, I haven't noticed any slippage and it shifts smoothly, but I've owned the vehicle for about 100k miles, so I'm sure it's long probably overdue for a fresh clutch.
I've searched YouTube to find other examples of the noise, but haven't been able to locate one. Everything I've watched has been grinding/banging, or vacuum related. The only video I found that might be related was a guy who noticed that the bearing race in the transfer case cover had been spinning in the housing and making a loud whining/whistling noise, but with the transfer case in 2H (I double checked to make sure) and the front drive shaft removed, I don't even see how that bearing would even be spinning or under any kind of load. At least not the front one.
Anybody have any insights?