Position the drain pan to catch the fluid that is coming out of this line. One of the lines carries hot automatic transmission fluid from the transmission to the radiator (or called the transmission oil cooler), while the other line carries the cooled fluid back to your transmission.ĭisconnect the lower transmission oil cooler line where it enters the radiator. These lines run from the transmission or the transaxle to the radiator. If using ramps, simply drive your vehicle onto the ramps. Slowly lower the floor jack until the weight of the vehicle is resting on the jack stands, and the jack stands are stable. Raise a front wheel of the vehicle with the floor jack, then position your jack stands securely under the vehicle. Place a wheel chock behind one of the rear tires. Start your engine and allow your vehicle to warm to normal operating temperature, then shut the engine off. If the fluid looks and smells normal, you can go ahead with the transmission cooler flush as planned. If the fluid is dark and smells burnt, you need to perform a fluid and filter change instead of a transmission cooler flush. You will need ten or more quarts of transmission fluid, either a floor jack and stands or ramps, a screwdriver, ratchet, socket set, wheel chocks, a drain pan, long neck funnel, and some shop rags or paper towels.įirst, pull the dipstick and check the transmission fluid that is on the stick. In order to perform a transmission cooler flush yourself, the following instructions will guide you through the proper process In the cases where transmission failure has been reported after transmission flushes are done, the biggest issue is that the high pressure flushing machine will dislodge dirt and debris that the transmissions internal pump doesn’t have the power to push out, and some of the larger pieces of debris can then be pushed into other parts of the transmission and get stuck in those often vital transmission parts. When you take your vehicle to a shop, in most cases they will use a machine that it specifically designed to push fluid through the system at high pressure to flush out the old fluid while simultaneously adding new fluid. When you do a transmission flush yourself, your transmission’s internal pump is used to flush out the old transmission fluid and to help circulate the new fluid through the system. You can perform the transmission cooler job yourself at home with the right tools, and a little bit of mechanical ability, or you can take your vehicle into a shop to have it performed.
For example, there is a lot of built up sludge material in your transmission that is usually picked up by a magnet in your transmission pan (if applicable), or a built in, non-serviceable filter as shown below. Not only will this help keep your transmission fluid in better condition, but may also remove any debris from the transmission fluid flow path, which may prevent bigger issues down the line. When you flush the transmission, all the old, worn out fluid and internal transmission clutch material that comes lose or wears out (this is common) will be pushed out in favor of new, fresh transmission fluid.
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