Does your stock or mildly modified Pontiac engine idle higher than it should because each time you try to dial it down, it runs rough? If so, this article is for you. We'll tell you why it's happening ...

I would like your advice on how to adjust the idle speed of my 1998 Nissan Patrol diesel turbo. The recommended idle speed for 4x4 is 650, but mine is at 800. The engine has a drive-by-wire throttle ...