If you have a rusty car frame, there are a few things you can do to fix it. First, try to clean the frame with a mild soap and water. This will remove any built-up dirt and grease that may have built up on the frame over time. Second, use a wire brush to clean the frame surfaces. This will remove any build-up of paint or other materials that may have been on the frame over time. Finally, use a vacuum cleaner and bucket to clean all of the inside of the carframe. This will remove any old dust, dirt, and other debris that may have been on the frame over time.