As well as the world of cars. I have been driving my grandfather's 1990 Toyota Pickup 3.0L 3Vze RWD for about 6 years now and it has about 174,000 miles on it. My throttle position sensor started acting crazy about 3 months ago. I have tried 2 other TPSs since then, and my good friend who is certified mechanic is at a loss at he moment. He patched all vacuum leaks he could find, but does not have the time to help me out any more due to his work. I have read about adjusting the throttle body, but that is about all I can think of doing to solve the problem.