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How to Check a Faulty Egr

The EGR, or exhaust gas re-circulation, valve is a key part of your vehicles exhaust system. The EGR valve is responsible for making your vehicle run efficiently by optimizing fuel intake. The EGR valve re-circulates exhaust back into the engine. The first sign that your EGR valve may need to be replaced or cleaned is when the vehicle starts to idle roughly or does not accelerates as quickly. You can check to see if your EGR valve needs replacement or cleaning yourself, saving yourself a trip to the shop.

Instructions

How to Check a Faulty EGR

1

Put the car in park and engage the emergency brake. Start the vehicle and let it warm up for 15 minutes.

2

Pull on the hood release cable inside the vehicle to open the hood. Locate the EGR valve on the engine manifold. You may want to er to your vehicles manual for exact location.

3

Locate the EGR plunger mechanism, which controls the exhaust gasses being re-circulated into the vehicles engine. The plunger is located on the outside of the EGR valve.

4

Check the EGR plunger for any malfunctions by having someone rev the engine. If the plunger opens and closes quickly, the EGR valve is good. If the plunger does not open or close, or opens and gets stuck, the valve is faulty and should be cleaned or replaced.