5 Reasons Why Your Transmission Is Leaking

You back your car out of the garage to head to work. You have to drop off the kids at school first, and you’re running late. You notice a spot on your garage floor toward the center of your car. What could be leaking from there? Unfortunately, the leak could be coming from your transmission, which is bad. Urb’s Garage lists five reasons why you might have a transmission leak.

Drain Plug/Transmission Pan

Your transmission pan is made from cast aluminum or steel and it’s located underneath your car, truck, or C/SUV. This leaves it susceptible to rock and road debris damage. Even a small rock can puncture the pan if it hits it just right. The drain plug is what we auto techs unscrew to drain old transmission fluid out of the system. If it’s stripped or not tightened properly, you could also end up with a fluid leak.

Broken Seals

Automatic transmissions use hydraulic pressure, and this pressure is hard on the transmission seals. The seals crack, wear down, and eventually succumb to the pressure and start to leak. The problem is you have numerous transmission seals, and the leak could be coming from the input or output shaft, driveshaft, plug or sensor, shifter or tail housing, valve body, or the speedometer input seal.

Pan Gasket Failure

The transmission pan gasket prevents the transmission pan from leaking fluid into the transmission housing. The gasket is a thin layer of rubber, and it wears down the older your vehicle gets. Sometimes, the pan gasket will start to leak because it wasn’t manufactured well; other times, it will crack because it’s exposed to high temperatures constantly. A cracked pan gasket can damage the housing.

Leaking Torque Converter

The torque converter is a pump inside your transmission that pushes fluid through the system. This transmission part is crucial to the health of your vehicle’s transmission, as the fluid it propels through the system protects and lubricates the gears and other moving parts. If the body or needle bearings of the torque converter crack or get damaged, you’ll end up with a transmission fluid leak. 

Cracked Fluid Lines

Many people think that automotive fluid lines are made of rubber, but your transmission’s fluid lines are made of aluminum or steel. One reason why they’re made of such a durable material is that they, too, get pelted by road debris and rocks. They are also exposed to high heat. Over time, the lines will crack and begin to leak. In some cases, they can even break completely when struck by an object.

Bring your automobile into Urb’s Garage right away if it’s leaking transmission fluid. Call our Burlington, KY, auto service shop at 859-594-7187.

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