trans temp
Pro
Joined: Sep 1999
Posts: 545
Likes: 0
From: San Jose, Ca./Kona, Hawaii
If it's over 90 degrees outside and your car is doing alot of shifting, you might see 225. However, normal driving temps are as stated above. If you are seeing temps consistently over 220, you need a trans cooler.
Instructor
Joined: Aug 2004
Posts: 161
Likes: 0
The motor runs at 220-230 on hot day. The A4 tranny is cooled through the radiator. I can sit in traffic and watch my motor warm up to 220 and my tranny will slowly warm up to 200-210. I think the heat from the water cooling the motor causes the fluid in the tranny to heat up. I'm adding a cooler just to test my theory.
I found a small unit from Earl's it is smaller than the B&M type but has more surface area. It uses cores + fins instead of the tube+fin arrangement. Motor is good to go running at 220-230 but there is no reason for the tranny to run that hot. Heat is the worst enemy of any hydraulic system.
I'm try to post pictures and results when it is done.
I found a small unit from Earl's it is smaller than the B&M type but has more surface area. It uses cores + fins instead of the tube+fin arrangement. Motor is good to go running at 220-230 but there is no reason for the tranny to run that hot. Heat is the worst enemy of any hydraulic system.
I'm try to post pictures and results when it is done.
