Transmission temperature
Thread Starter
|
New User
Joined: Jul 2000
Posts: 8
Likes: 0
Transmission temperature
I am interested in feedback on what is an acceptable transmission fluid operating temperature, as well as a typical range and maximum.
I drive a 1990 F-150 with a 351 block, E40D transmission with a Banks Transcommander, oversized radiator, transmission cooler, and 3.73 rear end. I recently installed a temperature guage for my transmission fluid with the intent of guarding against overheating.
Any observations and headsup you can provide would be greatly appreciated.
I drive a 1990 F-150 with a 351 block, E40D transmission with a Banks Transcommander, oversized radiator, transmission cooler, and 3.73 rear end. I recently installed a temperature guage for my transmission fluid with the intent of guarding against overheating.
Any observations and headsup you can provide would be greatly appreciated.
Senior User
Joined: Jan 2000
Posts: 190
Likes: 0
Transmission temperature
I've got the same eng/trans combo in a 90 F150, with the B&M Shift Plus, stock radiator, trans cooler and an electric fan. My autogage electronic trans temp gauge usually stays close to 165, but has gone to about 180 or a little above on hot days or long hills, etc. Hope this helps!
Chuck
Chuck
Thread Starter
|
New User
Joined: Jul 2000
Posts: 8
Likes: 0
Transmission temperature
Thanks for the input. Now for an update.
After a week's worth of observations, I have noticed a very peculiar phenomenon with my transmission temperature. I can drive for an extended distance on cruise control, maintaining a very consistent temperature of 180-195 degrees. Then at an eventual point, my control becomes disabled, which seems to occur when the outside air temperature is around 80-90 degrees. This happens pretty consistently, so I assume there's a safety reason for it. Now here's the weird part.
The moment I use the foot pedal for throttle control, my transmission temperature begins to steadily climb until it becomes necessary to pull over every 20 miles to let it cool off. The shart temperature increases are suspiciously coincidental with my foot throttling, although I am intentionally light-footed.
Has anyone run into this before? What should I be looking for?
After a week's worth of observations, I have noticed a very peculiar phenomenon with my transmission temperature. I can drive for an extended distance on cruise control, maintaining a very consistent temperature of 180-195 degrees. Then at an eventual point, my control becomes disabled, which seems to occur when the outside air temperature is around 80-90 degrees. This happens pretty consistently, so I assume there's a safety reason for it. Now here's the weird part.
The moment I use the foot pedal for throttle control, my transmission temperature begins to steadily climb until it becomes necessary to pull over every 20 miles to let it cool off. The shart temperature increases are suspiciously coincidental with my foot throttling, although I am intentionally light-footed.
Has anyone run into this before? What should I be looking for?
