Poor Fuel Economy
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Dodge Stratus, 2002 Dodge Neon, 2002 Dodge Intrepid, 2002 Chrysler Sebring, and 2002 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Check listed items as follows:
- Check powertrain control module power and ground circuits. See POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in appropriate SYSTEM & COMPONENT TESTING article.
- Check fuel pressure. See CHECKING FUEL DELIVERY under FUEL SYSTEMS in appropriate BASIC DIAGNOSTIC PROCEDURES article.
- Check engine coolant temperature sensor. See ENGINE COOLANT TEMPERATURE SENSOR under ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
- Check throttle position sensor. See THROTTLE POSITION SENSOR under ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
- Check manifold absolute pressure sensor. See MANIFOLD ABSOLUTE PRESSURE SENSOR under ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.
- Check idle air control motor operation. See IDLE AIR CONTROL MOTOR under IDLE CONTROL SYSTEMS in appropriate SYSTEM & COMPONENT TESTING article.
- Check inlet air temperature sensor. See INLET AIR TEMPERATURE SENSOR under ENGINE SENSORS & SWITCHES in appropriate SYSTEM & COMPONENT TESTING article.