Can a bad EGR valve result in expensive replacement?
In this article, we will discuss the symptoms you might notice if the EGR valve is damaged and how to take care of the situation. EGR valves are a partly known for failing often and they can result in an expensive replacement cost.
How does the EGR work in a car?
The EGR valve recirculates burned exhaust emissions back into the intake system so the emissions can be re-burned, or “recycled,” out the exhaust. The system operates by the opening and closing of solenoid valves, regulated by a diaphragm.
How to clean a blockage in the EGR valve?
You will need to clean the EGR valve of the blockage using the following steps: 1 Disconnect battery 2 Remove sensors or clips 3 Loosen bolts holding the EGR valve 4 Use a EGR or Carburetor Cleaner to spray the valve and hoses 5 Reconnect the battery More …
Is there a position sensor on an EGR valve?
Vacuum controlled valves don’t have a position sensor to monitor how much the pintle actually opened or closed compared to how much the engine computer wanted it to open or close. When car makers converted over to electrically operated EGR valves, they installed position sensors to get feedback as to actual versus commanded position.
Why does my engine stall when the EGR is open?
This is because the temperature is lower so fuel does not burn at the optimal temperature and as a result is less efficient. Stalling when the engine idles like a rough idle is usually caused when the EGR valve is permanently open and is constantly letting exhaust gases into the EGR system.
What are the symptoms of a failing EGR valve?
What are the symptoms of a failing EGR valve? A faulty EGR valve can cause problems with the flow and operation of the EGR system leading to performance issues including a reduction in power, reduced acceleration and decreased fuel efficiency. It can also cause vehicle emissions to increase.
How is the EGR valve controlled in a car?
It is a straightforward system which utilises a vacuum to switch the EGR valve from closed to open. The vacuum is often regulated by a computer-controlled solenoid. Most modern cars utilise an electronically controlled EGR which is controlled by the vehicle’s engine control module (ECM).
What can I use to clean an EGR valve?
This is a home experiment and an unbiased use of JLM Diesel Air Intake & EGR Cleaner. Similar products are available. This product is designed to dissolve carbon deposits, gum and varnish build up. It should restore air flow to the engine thus improving power and acceleration while reducing exhaust smoke.