Originally Posted by TJS2000
2000 TJ dies while idling. Be at at start up or just sitting in a fast food drive through. No issues while drinking. I6, 5 speed. 118k miles. Battery, plugs, air filter, oil recently replaced. Where should I start? Thanks.
Did it have the driveability problem before the work mentioned above was done?
The engine uses an electronic fuel injection system that regulates idle speed with a solenoid valve called an idle air bypass valve, located in the throttle body. Occasionally, the valve bore will get corrupted with carbon that reduces the apeture of the bypass bore/pintle, thus you dont get enough air bypass to regulate idle, thus an idle-hunt/stall will occur. This is one scenario; you'd need to do your pre-checks and make sure that the JeepTruck Electronic Control System runs all it's OBD monitors without populating any trouble codes before buying parts, guessing, etc.