Exhaust Gas Recirculation (EGR) Valves
Description: Meters exhaust gas into the intake manifold. This exhaust gas reduces combustion chamber temperatures and as a result it reduces NOX emissions.
Symptoms of Failure:
- Check Engine Light
- Hard Starting
- Poor Vehicle Driveability
Recommended Service: Remove and clean with each tune-up. Replace when valve sticks or diaphragm ruptures.