Does it matter which transmission cooler line goes where?

Does it matter which transmission cooler line goes where?

Mounting a transmission cooler is typically best in front of the air conditioning condenser so it gets ample air flow. Mounting here provides significant air flow which will help keep temperatures low. In addition, having the right parts to install a transmission makes the process easier.

Which transmission line is the return?

Generally the higher line on the radiator has fluid going INTO the transmission and the lower one goes back to the transmission, so the higher line has fluid coming out of it and the lower line sucks it back into the transmission.

What happens if you hook up transmission cooler lines backwards?

If you had it reversed, the pump would be trying topush fluid through the bottom of the cooler, up through the cooler, out the top into the bottom of the rad, and up through the rad to the top. More weight to push.

Can you use rubber hose for transmission cooler lines?

You can use rubber hose, but make sure it’s transmission cooler line rated. The pressure is quite low (12-15 psi). Double clamp it or use FI type clamps instead of the worm-drive style.

Do you really need a transmission cooler?

For every 20F degree drop in transmission fluid temperature, you can expect to extend the fluid and equipment life, thereby extending the life of the vehicle. That’s why it is very important to have a quality transmission cooler, and more importantly, to have it professionally installed.

Can I use rubber hose for transmission cooling lines?

How do you know transmission return line?

The surest way to find the return line in a transmission cooler system is simply to run the cold engine for about 15-seconds while it is in gear. Then immediately feel the two transmission lines.

Can you bypass transmission cooler lines?

It is possible to bypass the factory cooler in the radiator by blocking off the input/output locations for the transmission cooler on the radiator. You would then need to mount the largest possible cooler that you can get to fit or install a remote cooler with its own fan.

Why do transmission lines go to radiator?

Car transmission lines connect your vehicle’s transmission to the vehicle’s radiator. Your car’s transmission lines are essential to preventing the transmission from overheating by carrying hot fluid away from the transmission until it is cooled and subsequently pumped back into the transmission.

Can a transmission cooler be too big?

Too big could be a concern if mounted in the front of the rad creating a loss of air flow to keep the engine cooled . Years ago , GM released a TSB about overcooling the transmission in cold climates .

Can you splice transmission cooler lines?

Yep you should be OK, just make sure the clamps are tight and the hose isn’t kinked. FWIW I’m using about 1-2 feet on each of my cooler lines near the transmission linking them to the original metal AOD cooler lines, then have the metal lines linked again with rubber hose at the cooler from the radiator.

Where is the return line on a trans cooler?

So as I understand it, I should leave this line into the radiator and take the return line off the radiator, put a fitting in the old return line spot on the radiator, run this line to “in” on the cooler, then run the “out” line on the cooler to the original return line on the trans.

Why are cooler lines important in a transmission?

The transmission cooling line system is vital to any automatic transmission. It circulates the hot fluid away to the radiator via cooler lines and returns the cooled fluid back to the transmission. A loss of fluid leading to an overheated transmission can be devastating as the system loses its ability to cool.

What do you call a transmission cooler fitting?

NPT or AN to Barb – used for transmission cooler to rubber line. AN To NPT – Used for transmission cooler to an fitting to braided line. Barb to Barb – Used to connect two rubber lines together. These fittings are common for when you install a transmission cooler and keep the existing rubber lines on the vehicle.

Where does the cooler go on a GM Truck?

Tell me if I’m right or wrong, because at the moment, I can’t start the truck (stil no body on it) to see which is pressure or return. The lower hose on the trans goes to the cooler. Here’s the list of GM transmissions and their in/out line sizes and flow direction.