Using used auto parts in a car or truck is not uncommon, and replacing a transmission that is not working correctly with one from another vehicle can save you a significant amount of money. It is vital that the tech installing the used transmission in your car does a full service and cleans the unit before installing it. Doing so will help ensure you get the most from it and don't cause damage to the transmission.
Used Transmissions
When buying a used transmission to use as a replacement in your car, look for units that are in vehicles with relatively low mileage. A transmission from a car or truck that is running, and can be shifted through the gears, is best because it is the easiest way to assess the transmission's condition.
A used transmission that has been sitting unused is not automatically bad, but you need to use some other methods to check it, and it can be a little more challenging to ensure you are getting a good unit. Most salvage operations will replace the transmission if you get it installed and it does not function. However, that takes a lot of time and can delay a project significantly if you have to remove and replace a second transmission.
Assessing Condition
Check the transmission fluid, not for quantity, but for its overall condition. If the fluid level is low, it could have leaked during the removal, so often is not a good indicator to use. However, a used transmission with dirty fluid that smells burned and is dark brown or black has more than likely been run hot at some point which can cause damage to the clutches inside the case.
It is also a good idea to remove the transmission oil pan on the bottom of the used transmission and inspect the oil filter and the pan for debris. If there is metal in the pan or filter, you may need to rebuild the transmission before using it in your vehicle.
Clean the outside of the case and inspect it for cracks or holes when considering a used transmission, and take your time to ensure you get a good unit.
The Installation
The fluid should be flushed out of transmission oil coolers and lines in your vehicle and changed in the used transmission before installation. If a transmission shop is replacing the vehicle's transmission for you, they can handle all of the cleaning and service necessary, but don't be afraid to speak up and ask them about it.
Once the used transmission is in the vehicle and functioning correctly, you will need to consider future service requirements to ensure it continues to work for the life of the car.
Contact a local auto shop to learn more about used transmissions.
After struggling for years with a terrible car, I knew that it wasn't going to last another season. It was beat up, worn out, and completely unreliable. Instead of giving up on the car, I decided to talk with a friend of mine who was really great with vehicles. We worked together to take care of things, and we even found some great prices on auto parts to take care of business. When we were finished, the car ran like new, and I was really impressed with the results. If you like learning more about cars, read this blog to learn about everything from auto parts to routine repairs.