Well, since I have a major portion of my engine disassembled, I have decided to clean my throttle body. The car is a 1998 LS400 with 118,000 and the throttle body has never been cleaned and the gasket is still the original. I've cleaned many a throttle body before and have never really noticed much change in the way a car runs after a cleaning. However, if a throttle body is literally caked on with carbon and oil, then that will affect a number of things, including throttle response, idle, acc