Q: Transmission cooler line leaking

asked by on

The transmission cooler line leaks at the radiator connection.

Hi there. It is very common to see leaks at this connection. The metal transmission cooler line connects to the radiator with a set of flare fittings. It is common for these to either come loose or to become warped and start leaking. You can check to see if the connections are loose and tighten them up until they are snug. You want to use a flare wrench for this to prevent from warping the connections. If they are tight then you need to see if the connections look crooked. If they are then they may be cross threaded. If they are then it may need a new radiator and new connections for the hoses. I would get some assistance from a certified mechanic, like one from YourMechanic, as he/she would be able to diagnose your leaking issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Transmission cooler line leaking

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Starting issue

Hi there. If you are receiving power to all accessories, but when you turn the key, nothing happens, it is likely your problem is caused by three items. First, it's possible the ignition switch is faulty, second, the ignition relay...

Q: Are Nissan Primera and Nissan Pulsar gear sensors the same ?

Vehicles with similar engine and transmission assemblies often share parts, but you must purchase parts in reference to the vehicle they are being placed on in order to ensure the proper part is ordered and installed. There may be small...

Q: Takes a long time to crank .

I would ensure you are getting strong spark with a spark tester (available for a few dollars). Depending on the version of the 4.3L you have, they are known for having problems with the fuel system. For example, if you...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.