Q: Transmission cooler line leaking

asked by on January 27, 2016

The transmission cooler line leaks at the radiator connection.

Transmission fluid is leaking Inspection $94.99 - $114.99 Get a Quote

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I turn off the flash lamps?
Flash lamps are a locking and unlocking feature. When you lock or unlock your vehicle with the remote keyless entry (RKE) transmitter, your turn signals flash on and off. This acts as visual confirmation, and can also help you see...
My truck is running rough
Having a rough running vehicle is never a pleasant experience. Unfortunately there can be quite a few reasons as to why your GMC is running rough for you. With the limited information, and not being in front of the car,...
Are stabilizers the same as tie rods? I think no??
Hello. The short answer is no. Tie rods (https://www.yourmechanic.com/services/tie-rod-end-replacement) are part of your steering system. They are integral to your cars ability to drive straight and turn. I guess in some sense they contribute to the stability of your car,...
Why does my tire sounds so loud when I turn my wheel?
Hello. It all depends on the sound you are hearing. If it is a whining sound, then you may be low on power steering fluid (https://www.yourmechanic.com/services/power-steering-fluid-service) caused by a leak in the system or a defective power steering pump. If...
I cleaned the ECM/PCM and now my car won't stay on
Whenever the ECM is disconnected the idle control settings the ECM has stored in memory will be cleared. The ECM will revert to the factory-new settings and since the engine now has high mileage and the need for adjustments to...
Spare tire miles I can drive?
You need to look on the side of your spare tire for speed and miles limits that you should drive on the spare tire you have. Some space saver spare tires limit your speed to 50mph and limit miles you...
Will a faulty crank position sensor affect my auto trans function? 2003 Dodge Grand Caravan
Hello - No, the crankshaft position sensor will not affect your transmission at all - except when it fails, and the engine ceases to run. Check your transmission fluid for the correct level and condition (pinkish, with no burned smell)....
Clicking Sound
What you are describing sounds like a faulty starter solenoid (https://www.yourmechanic.com/services/starter-replacement). A faulty starter solenoid will generally produce a clicking sound when turning the key. The starter solenoid is located on the starter and has internal electrical contacts that transmit...
Hi my belts squeels randomly when I turn my car on. Today for the first time while I was driving it started to squeel, what could
Noise of that type is often due to a failed or failing bearing in one of the pulleys or accessories (e.g., alternator, water pump, A/C compressor) that is driven by the serpentine belt, the belt is not properly tensioned, or...

Related articles

The Best Used Cars to Buy If You Don’t Have Kids
Buying Buying a used car is rarely a simple process, but if you don’t have kids, you have many more options than those who have to account for additional passengers. There are plenty of choices out there, depending on your...
The Best Used Cars to Buy If You're Towing a Boat
If If you’re towing a boat, the vehicle that you buy is largely going to depend on the size and weight of your boat plus trailer. Most cars, realistically, aren’t cut out for the job. We recommend a pickup truck...
How to Buy a Good Quality Driveshaft
The The driveshaft is the part of your car that takes the engine’s power and sends it to your wheels in order to propel the vehicle. There are two driveshafts in front-wheel drive cars, called half shafts. Rear-wheel drive vehicles...