2004 4l80e hot trans on hills
Hi my 2004 k2500 transmission gets up to 230f on any grade locked in 3rd gear and not gear hunting. Why is it getting that hot on hills?
Forum Discussion
Lifted?
Over sized tires?
Both reduce ratings and efficiency
Automatics are hydro fluid coupled and has a 10%-15% or more slippage. Inherent
in how they work.
Why they invented the TC lockup to remove that slippage, but lost is the torque
multiplication of hydro fluid couple that a TC's design enjoys
That slippage is why ATF gets hot, mainly. There are also losses in the planetary's
and bearing, but minor in comparison to the hydraulic slippage (shearing of fluid)
Also, what are your weights and speeds/terrain/etc you drive?
Heavier poses more stress on the TV & components...therefore more heat generated
by the TC.
Over sized tires?
Both reduce ratings and efficiency
Automatics are hydro fluid coupled and has a 10%-15% or more slippage. Inherent
in how they work.
Why they invented the TC lockup to remove that slippage, but lost is the torque
multiplication of hydro fluid couple that a TC's design enjoys
That slippage is why ATF gets hot, mainly. There are also losses in the planetary's
and bearing, but minor in comparison to the hydraulic slippage (shearing of fluid)
Also, what are your weights and speeds/terrain/etc you drive?
Heavier poses more stress on the TV & components...therefore more heat generated
by the TC.
