Can a new EGR valve be faulty?
If the EGR temperature goes bad, or takes faulty reading as the result of carbon build-up, your EGR valve will fail to perform the way it should. Fortunately, you can usually restore normal operations by having your temperature sensor inspected and replaced if necessary.
Is it bad to drive your car with a bad EGR valve?
Is it dangerous to drive with a bad EGR valve? Yes, it is. When the EGR valve opens, exhaust gases are reintroduced into the combustion chamber to cool it and reduce oxygen consumption. The temperature at which oxygen is burned is higher than the temperature at which fuel is burned.
When to replace or clean the EGR valve?
Or, the EGR position sensor can fail, causing a check engine light. If your car is running fine at idle and you don’t have a check engine light, there’s no need to replace or clean an EGR valve. Some shops recommend periodic cleaning. I think that’s a waste of money.
What’s the code for an EGR valve throw?
What code will an EGR valve throw have? The P0401 trouble code is related to your car’s exhaust gas recirculation (EGR) system, which controls an engine and reduces emissions. Suppose a computer-controlled valve gives a certain amount of gases back into your engine to be burnt with the air-fuel mixture.
Are there any disadvantages to using an EGR valve?
There are some disadvantages of EGR as well such as loss in fuel economy, low performance and, in diesel-engine cars, the production of soot increases. However, modern engines use clever technologies for an efficient process, for example, new diesel engines now use EGR cooler which cools down the exhaust gasses by passing the coolant.
Why does my check engine light come on when my EGR valve is stuck?
Whether the EGR valve is clogged, stuck open, or stuck closed, you’re going to get a check engine light. While the check engine light will usually point you straight to the EGR valve, it is possible that it might come on due to a symptom instead of a cause.