EGR Valve

The Exhaust Gas Recirculation Valve also referred to as EGR, meters the exhaust gas that is being recirculated into the intake manifold. This exhaust gas recirculation process reduces combustion chamber temperatures, resulting in reduced NOx emissions.

Common causes of failure include:

• The valve gets stuck in the closed or open position due to a build-up of dirt, debris, or carbon
• Clogged catalytic converter
• Electrical issues with the valve control unit
• Intake leaks
• Incorrect vacuum hose connection
• Damaged or missing EGR valve gasket
• Issues with the vacuum control or switching valve
• Defective EGR solenoid

Symptoms of a failing Exhaust Gas Recirculation Valve may include:

• Difficult starts
• Engine surging
• Rough idle or stalls when idling
• Reduced fuel efficiency
• Fuel odor
• Knocking noises coming from the engine
• Check the Engine Light on