Introduction

Rough idle? A good dousing with throttle body cleaner may be enough to restore your EGR valve to near-mint condition, transforming a harsh idle into a soothing hum.

Tools Required

Materials Required

• Cotton swabs
• Disposable gloves
• EGR gasket
• Rust penetrant
• Throttle body cleaner

Idling and stalling problems can really add stress to your daily commute. The most common culprit is carbon buildup on the throttle body, exhaust gas recirculation (EGR) valve and idle air control (IAC) valve. Here we’ll show you how to clean an EGR valve. This simple procedure can often bring an EGR valve back from the dead and restore a smooth idle. If the cleaning doesn’t work, you’ll have to replace the valve.