Skip the auto shop - Our mechanics make house calls

Q: Transmission fluid coming up into water overflow

asked by on

My car’s transmission fluid is coming up in the water overflow. I installed a new radiator, but the fluid is still getting into the water overflow. My car will drive for a while, but when it gets hot, it won’t go into gear. What should I do?

A: Hello. The transmission cooler tank may be ...

Hello. The transmission cooler tank may be leaking, causing water to get into the overflow. It is possible that the radiator you just replaced as a leak may need to be replaced again. If the transmission fluid is low, this could prevent the transmission from shifting gears. If this is the case, you may need a new transmission. Have a certified technician, like one from YourMechanic, come and properly inspect your transmission fluid leaks and make any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Replace a oil pump

Replacing an oil pump involves dropping down the front sub frame and then removing the oil pan. You will need to support the engine and transmission assembly. The important question here is: why are you replacing the pump? ...

Q: Does An Automatic Transmission Have a Clutch?

An automatic transmission does not use the same style clutch that a manual transmission uses. The automatic transmission uses a torque converter attached to the engine and transmission to serve as a connection between the two components. The torque convertor...

Q: Electrical components malfunction, dash lights on, car shut off

Hello there, this is a more uncommon issue on the XG300. There are a few possible causes why the vehicle would not shift out of 3rd gear and would go into limp mode. The most likely cause would be a...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.