View Single Post
Old 10-27-2013, 11:49 PM   #7 (permalink)
t vago
MPGuino Supporter
t vago's Avatar
Join Date: Oct 2010
Location: Cedar Rapids, IA
Posts: 1,766

The Karen-Mobile - '05 Dodge Magnum SXT
Team Dodge
90 day: 26.72 mpg (US)

Fiat Dakota - '00 Dodge Dakota SLT RWD Quad Cab
90 day: 16.67 mpg (US)

The Red Sled - '01 Dodge Durango SLT 4WD
90 day: 16.96 mpg (US)
Thanks: 799
Thanked 681 Times in 437 Posts
When Chrysler transmissions (and, I suspect, many others) are driven from the drive wheels while in neutral, there's still some friction going on inside the transmission itself. Normally, this is not really a concern because the engine would be running, therefore would be driving the transmission fluid (oil) pump, therefore would be providing transmission fluid to cool off those moving parts that are being driven.

The whole reason why it's not advised to go in neutral for more than a few miles, while the engine is turned off, is because there's really nothing that will drive the transmission fluid pump, so those moving parts will tend to overheat and eventually fail.

That noise you're hearing is likely something that expanded due to heat buildup from friction, rubbing against something else that is being driven off the engine, and it goes away because there is now transmission fluid flowing over the overheated parts, cooling them off, and in the process causing them to shrink back to normal size.

Recommended Vehicles : Remco <- You might want to look into something like this, that will pump transmission fluid throughout your transmission, even with the engine turned off. Heck, I might even look into it.
The Fiat Dakota

The Karen-mobile

The Red Sled
  Reply With Quote
The Following User Says Thank You to t vago For This Useful Post:
101Volts (10-28-2013)