I have a 2002 F150 FX4 with the 4R70W transmission; dual core radiator with the aux transmission cooler. My question is which port on the transmission goes to the radiator and which is the line from the aux cooler? Yanked the lines off and forgot to mark which one was which; I should know better.....

THANKS!

 

From; AODE and 4R70W Transmission FAQs - Baumann Electronic Controls, LLC

7. Which cooler line fitting on the AODE/4R70W transmission is out and which line is in?

On the AODE/4R70W transmission, fluid leaves the transmission through the lower case fitting, and returns from the cooler through the upper case fitting. Please note, this is NOT true for the AOD.

 

Thank You! Does the fluid enter the radiator or the aux cooler first?

 

Can anyone very for me that the transmission fluid runs from the transmission into the radiator, THEN into the cooler, before returning back to the transmission?

 

You can arrange it as you wish. For the coolest fluid go radiator first then aux. cooler. Radiator is at engine temp. Cooler is at air temp provided that it is in front of the radiator.

 

Good points. Thank you!