Do you have a high or surging idle on your Toyota equipped with a 4A-GE Engine? Does the idle keep high even after the engine is warm and up to operating temperature? You may have a clogged ISCV (Idle Speed Control Valve). In this series of videos I show you how to remove the throttle body (Part 1), how to clean and diagnose the ISCV (Part 2), and finally how to put everything back together, re-tune the TPS (Throttle position sensor) and lubricate throttle body in preparation for its installation in the Toyota Corolla AE86.