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.
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- What happens if the EGR valve is stuck open? Open Position: Rough idling and problems with acceleration are the two most common indicators that the EGR valve is stuck open. The truck might also stall excessively. When the EGR valve is stuck open, all of the exhaust gas cycle back into the chamber, meaning there's not enough oxygen for a combustion to take place.
- What sensor controls idle speed? An idle air control valve, also called an idle air sensor control motor, is an electrically operated valve that controls the amount of air that bypasses the throttle plate in cars with a fuel injection system [source: Autozone]. This causes the idling speed of the engine to change as needed.
- How often does EGR valve need cleaning? How do you clean out your EGR valve? The good news is that, if you catch it in time, you can clean the carbon out of your EGR valve. Many automakers recommend doing so at least every 50,000 miles, Autoblog reports. And you don't necessarily have to go to a mechanic to clean it out.
- Does cleaning EGR valve improve performance? A clean EGR valve can reduce the amount of nitrous oxide emitted from your car. Also, cleaning the EGR valve can help increase the longevity and performance of your car's engine. An unclean EGR valve can damage both your vehicle and the environment.
- "Can I clean my EGR valve myself?" An Easy Repair You Can Do at Home If your car is running poorly, you may be having problems with your exhaust gas recirculation valve, or EGR. While you can't test your EGR valve function from home, you can clean it there, a simple task that effectively acts as a repair.
- Can an idle control valve be cleaned? The good news is, you can clean your idle air control valve from home—in fact, you don't even have to remove it to get it clean! Here's what to do: Locate your car's idle air control valve. Typically, you'll find it attached to the throttle body in your car's engine.