mikevsgeek > Engine idles just over 1k while the vehicle is rolling out of gear, and output shaft, t-case, and trans gears are turning due to the rear wheels turning.
Compression brakeing is for BOTH slowing down to a stop (commonly referred to as "downshifting", and to keep a safe downhill speed (usually there is a sign stated use low gears. Still there is a point where being in gear requires to use slight throttle while going DH to maintain speed, THIS is where "N" is commonly used, unless "N" also is slowing you down.
As stated, you must know how to reengage the trans to prevent "shock", just as with climbing a hill in 4th and dropping to 3 takes a little play with the throttle (or a double clutch may work, I've never done it other then my F100) to match revs.
nitecop, jeepnblake > My TJ temp droped to the bottom during a decent, but it was a bit chilly out and my dual core bass/copper radiator over cools. I used some cardboard to block some wind. Even in 105°f weather I will not reach proper operating temp while moving. My e-fan is off all the time, unless I am not moving for a longer then a red light.
Last edited by Phreaq; 08-17-2010 at 11:10 PM.