Skip the auto shop - Our mechanics make house calls

Q: EGR valve is open when cold and closed when engine hot

asked by on

My freelander 2 when i start works fine but when heated it becomes rough. Scanner says EGR valve gets closed when engine hot and it is open when engine is cold

My car has 99000 miles.
My car has an automatic transmission.

A: Hi there. Usually this situation is caused ...

Hi there. Usually this situation is caused by an EGR valve that is dirty and needs to be cleaned. This component recirculates unburned fuel particles (carbon) from the exhaust and back into the intake manifold to be burned a second time during the combustion process. When the EGR valve gets dirty, it can malfunction. The solution is to either clean or have a professional mechanic replace the EGR valve.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: I'm unsure about replacing my timing belt.

I agree with your local mechanic and am very sad to hear your father in law has given you such advice. The service interval for the timing belt on your car is every 60,000 miles. Mitsubishi's are known for breaking...

Q: Car shaking at freeway speeds

Hello. There are several things that would cause a car to shake when at freeway speeds, climbing hills, and when accelerating. One reason being that one or more of the tires are out of balance. It is also possible that...

Q: Jerking when accelerating from a complete stop

This kind of reaction is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...