Trans Oil Cooler Line Replacement

How are transmission oil cooler line issues diagnosed?

When any transmission symptoms are present, the technician will first conduct a visual inspection of the vehicle, and note any observed issues. If the transmission issue is related to a leak on the transmission cooler or transmission cooler lines, those components will be inspected, and either resealed, or replaced. n the transmission. Once the suspected component(s) have been tested, any failed component must be replaced, and the transmission will be tested once again. Failed transmission cooler components are typically very easy to notice for the experienced technician.

How is a transmission oil cooler line replaced?

Leaking transmission cooler line replacement is normally done without draining the transmission fluid, but the transmission oil cooler must be drained once the first line is disconnected from the transmission. After the transmission cooler stops pouring fluid from the lines, the remaining connections can be disconnected, and the new lines placed into existing retaining hardware. Once the transmission fluid cooler lines are reconnected, the servicing technician will refill the transmission with new fluid prior to reconfirming the repair.

RepairPal Recommendations for transmission oil cooler line issues

We recommend comparing the factory part to an aftermarket part, and ensure the bends in the line are all correct. Many lines will not be correct when they are ordered, and must be bent into shape using specialty tools. This should be considered if planning on taking this project on as a DIY.

What to look out for when dealing with transmission oil cooler line issues

There are many types of transmission fluids, and they are not typically interchangeable. Consulting the owner's manual for your vehicle is the best way to ensure you have the correct fluid for your transmission. If improper transmission fluid is added, the resulting damage could be severe.

Can I replace the transmission oil cooler line myself?

Most experienced DIYers can replace the transmission lines for the transmission fluid cooler. The experience is needed to ensure the fasteners are tightened properly to prevent leaks, but not so tight they cause them. If the manufacturer specification for those fasteners are followed, the task should not be a problem.