32RH Running Temp Too High?

[TuckerMAustin]

Installed a temp sensor in my 32RH tranny pan which is a deep pan and also have an auxiliary cooler in line with the stock cooler and it’s running at 210 degrees just driving normal around town. In 4low in the hills, it was reading around 220-240. Is this high? I’ve got ATF+4 in it that’s only about 6 months old. I think I can hear the tranny whining when I’m driving around town as well.

 

[CMBD]

Is it full when checked running in neutral?

210 is warm. 240 for any length of time would concern me.

 

[TuckerMAustin]

Is it full when checked running in neutral?

210 is warm. 240 for any length of time would concern me.

Yes, and fluid is still red, it was running at 180-200 a few months ago but now it’s doing 210 consistently.

 

[hear]

If it’s slipping that could cause the increase in temps. If there’s no material in the fluid, it could be that there is a leaky piston seal that is preventing the full “clamp” of the frictions/steels. Or your torque converter could be going bad. Or probably 10 other things.

It’s a little bit involved, but there is a way to test the pressure (aka the ability of the seals to hold pressure) detailed in the fsm.

 

[TuckerMAustin]

If it’s slipping that could cause the increase in temps. If there’s no material in the fluid, it could be that there is a leaky piston seal that is preventing the full “clamp” of the frictions/steels. Or your torque converter could be going bad. Or probably 10 other things.

It’s a little bit involved, but there is a way to test the pressure (aka the ability of the seals to hold pressure) detailed in the fsm.

Haha it’s never just a simple fix with these things… I’m going to try a reverse flush in the cooler lines today and then go from there.

 

[TuckerMAustin]

*Update* Fixed the slipping problem by adjusting the throttle valve cable, easy. Then figured out I had a faulty trans fluid temp sensor. I flushed the lines and checked for tranny pump pressure and it works great. Decided to get a new sensor and it doesn't even get up to 180 now, which is what I would expect with the size of oil cooler I have. All is well. Thanks for the help.

 

[hear]

Mine never even gets to 165 after installing the cooler, glad you got it sorted.