The cause of high idle are vacuum leaks or a bad or dirty Idle air control. Check pcv valve to see if its working properly. pinch off the hose that supplies the PCV valve. The engine speed should drop slightly. If the engine returns to a normal idle speed, the PCV valve should be replaced. The Idle air control regulates engine rpms.
Spray wd40 around air hoses to find leak. When the wd40 hits the leak you rpm will drop, that is where your leak is.
2,791 views
Usually answered in minutes!
×