Dear Friend, Stop wasting hours of your valuable time doing multiple searches on the internet trying to find information on what engine sensors are on your engine, what they do, what data they send to the engine computer, what the sensor looks like, where it is located, and how to replace it This book shows you what I did to fix my 1998 Jeep Grand Cherokee Laredo 4.0L six cylinder engine stalling issues without going to the Jeep dealer. To find the basic information in this book on the internet would take you many, many frustrating hours of searching. This information also applies in general, but not exactly, to other year and model Jeeps that have the same 4.0L six cylinder engine. This book could save you a lot of money depending on what a Dealer would charge to try and fix your stalling problem. Take action to better your life; if you fail to take action today, things will not get better.