brycebba
I'm Awesome
- Joined
- Mar 16, 2014
- Messages
- 439
- Reaction score
- 19
I have a 96 3500 CCLB with a 4L80E and have done the super cooler mod that there is a sticky for which is only slightly larger than stock but a better design. I have my temperature sending unit in the transmission pressure test port and cruising on the highway or city long enough it will heat up to 180 or 190 but no higher. I was kind of ok seeing that with a bunch of city driving where the torque converter hardly locks up but on the highway when it locks I don't understand why it doesn't cool.
I had a 03 cummins that acted this same way but it was because it had a heat exchanger that runs the tranny fluid along side the antifreeze to help heat the tranny fluid but that gets it too hot almost to operating temps. I bypassed that and the trans never got above 200 even towing my 28ft trailer with a 16ft 4 wheeler trailer behind that unless I was in the city.
Our trucks don't have anything stupid like that do they? I didn't notice it but is there a flow specific direction to those B&M coolers? I don't even want to try towing my trailer for the first time until I get this figured out. Btw, had my favorite trans builder look it over and do a fluid change just after I bought it 6 months ago and he said it looked amazing and the truck only has 66k on the clock
I had a 03 cummins that acted this same way but it was because it had a heat exchanger that runs the tranny fluid along side the antifreeze to help heat the tranny fluid but that gets it too hot almost to operating temps. I bypassed that and the trans never got above 200 even towing my 28ft trailer with a 16ft 4 wheeler trailer behind that unless I was in the city.
Our trucks don't have anything stupid like that do they? I didn't notice it but is there a flow specific direction to those B&M coolers? I don't even want to try towing my trailer for the first time until I get this figured out. Btw, had my favorite trans builder look it over and do a fluid change just after I bought it 6 months ago and he said it looked amazing and the truck only has 66k on the clock