Yellow Cake Kid
Well-Known Member
- Thread starter
- #1
Hi,
We have been driving our new JLU Rubicon 3.6L with automatic transmission for only a short time, and I finally had a chance to try out its 4 Lo setting.
We were descending a set of steep switchbacks so it seemed prudent to utilize the drag of the drive train. We stayed well below 10mph, but the entire time we descended the drive train made a distinct "whirring" sound. It was a high pitched tone that I might associate with dragging the system at a very high rpm.
Later in the afternoon we made a short climb over some rocks and I had occasion to switch back into the 4 Lo setting. When I was actually driving the gearing against the incline it seemed quiet compared to when I has using it to slow the descent.
I am imagining that the extremely low crawl ratio in this new system causes the gears in the transfer case to spin like a gerbil wheel when it is trying to keep the Jeep from careening down a hill.
Is the noise I am hearing a common experience when working your way down a hill in a new JLU?
Thank you.
We have been driving our new JLU Rubicon 3.6L with automatic transmission for only a short time, and I finally had a chance to try out its 4 Lo setting.
We were descending a set of steep switchbacks so it seemed prudent to utilize the drag of the drive train. We stayed well below 10mph, but the entire time we descended the drive train made a distinct "whirring" sound. It was a high pitched tone that I might associate with dragging the system at a very high rpm.
Later in the afternoon we made a short climb over some rocks and I had occasion to switch back into the 4 Lo setting. When I was actually driving the gearing against the incline it seemed quiet compared to when I has using it to slow the descent.
I am imagining that the extremely low crawl ratio in this new system causes the gears in the transfer case to spin like a gerbil wheel when it is trying to keep the Jeep from careening down a hill.
Is the noise I am hearing a common experience when working your way down a hill in a new JLU?
Thank you.
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