Skip the auto shop - Our mechanics make house calls

Q: I suspect my egr system is clogged up possibly causing the knock senor code

asked by on

I was wondering where exactly is the egr valve on the 2010 Chevy cobalt? because I want to clean that out first, I believe its clogged up. When testing the sensor system do I remove the knock sensor from the block to test the system to see if it indeed has a knock? any advice would help me out tremendously

My car has 142000 miles.
My car has an automatic transmission.

A: Hey there, the EGR valve usually is located...

Hey there, the EGR valve usually is located on the exhaust manifold. The EGR valve can become clogged over time leading to many different issues. In some cases, cleaning the EGR can fix the fault, but not always. When a knock sensor is tested by a technician, they do not generally remove them. If you want to have this inspected, a qualified technician, such as one from YourMechanic, will be able to diagnose this fault and perform any repairs required.

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・Save up to 30%

Get a quote

What others are asking

Q: Currently I have locking wheel nuts

You may have custom wheels that will require only special thin lug nut types. You cannot put extensions on them. You will always need to use a special kind of lug nut and special socket the put them on and...

Q: Transmission & brake problems

Hi there. From the description you have provided, leads to advising you to find another repair facility. All the work you have had done and the problems your vehicle has, should be covered by the repair shops warranty. The smoking...

Q: My 2010 BMW 535 xDrive (n54) is making a ticking noise

It is not uncommon for BMW's to tick, but there are solutions that are helpful. Keeping the revs up (instead of lugging around like it was a big V8) is one way to do this. Keeping it at about 2000...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...