Section 21 (Engine Controls - Theory & Operation): Introduction

WARNING: This page is about a different car, the 2003 Dodge Grand Caravan, 2003 Dodge Caravan, 2003 Chrysler Voyager, and 2003 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.

This article covers basic description and operation of engine performance related systems and components. Read this article before diagnosing vehicles or systems with which you are not completely familiar.

NOTE: References to California models apply to California emission vehicles, which may be verified by underhood Vehicle Emission Control Label. California emissions may be available in other states.

NOTE: All models have a Vehicle Emission Control Information (VECI) Label. Chrysler permanently attaches the label in the engine compartment. It cannot be removed without defacing information and destroying the label. The label contains the vehicle's emission specifications and vacuum hose routings. All hoses must be connected and routed according to the label.