I installed a Hayden Transaver Transmission Oil Cooler part number 1405. This is for extra heavy duty driving. Class "A" motor homes, large travel trailers, 5th wheel trailers, etc. It has a gvw of 26,000 lbs.

It took about 30 mins. But now after installing it...i think i done screwed up. I didnt use the radiator collent tank. I bypassed it completly. Just basically connected one tranny fluid line to one input of the cooler, and the other one to the other side, basically getting rid of the radiator. I read that i shouldnt have done that?....That I should have used the radiator and the cooler?
The reason why i bypassed the radiator is for one, dont know how i would hook it up using both...and two, wouldnt the radiator actually "heat" it up to the temp of the coolent?....need help here , taking the car on a 1000+mile road trip in a week...blah

Thanks all of you for the help in these forums!

 

Ok, what you should have done was connect the line that exits the existing cooler [line(A)] and connect that as the entry line for the new one. The exit line from the new cooler needs to connect to the line that is running to the transmission that [line(A)] should have connected to originally. Any questions?

 

Hah, yeah, I thought about it for a min..then "click".

Now, is the tranny line on the bottom of the radiator the inlet or outlet?

 

yeah man i just bought that one too. i had some questions about how to install it correctly. so i used this link http://www.bfranker.badz28.com/94Z/trannycooler.htm to answer my questions. btw that cooler does a great job.

 

ok, feel the two lines at the bottom of the radiator(after running car for like 3 minutes), whichever is cooler, is the LINE THAT FLOWS TO THE TRANS. If you can't distinguish the two temperatures, just pull the rubber line off of the hard line, while running, and figure out which way it flows, REALLY QUICKLY, cuz you'll lose trans fluid quick cuz its pressurized.

 

The bottom line on the TRANSMISSION is the feed line to the cooler.

You should leave it ran through the stock radiator, and then out, to the external cooler. From the external cooler back to the top line on the TRANSMISSION.

Frank
CPT

 

Where do you guys even put tranny coolers? in front of the radiator?

 

Tru-Cool 4490 fits perfectly in front of the condensor on all 4th gens.

Frank
CPT

 

Thanks, all installed correctly and tested for leaks n such. all is well All of you guys here are amazing! Thanks
PS: Sorry for asking so many questions, just dont want my car to go up

 

No problem at all. We're here to help. Just let us know if you need anything else.

Frank
CPT

 

but wont the coolant temps get the tranny hotter?thats what i think thats why i have always run it seprately from the radiator but what happens if the side tank for the tranny in the radiator breaks then you have tranny fluid all in your coolant just like the oil cooler side of the radiator does in other lt1 cars.