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・Fair and transparent pricing

Get a quote

What others are asking

Q: 5 speed manual

Hi there: Unless you're a transmission specialist, it's very difficult to complete a physical inspection on a five-speed transmission if it's out of the vehicle. Some of the basic things you'll want to inspect are transmission seals, that the gears...

Q: 2005 Cobalt CEL after code repair

Hello. A catalytic converter code can come up for many reasons, usually indicated by the specific trouble code. A catalytic converter code can point to a few different things. Depending on the code, a few common causes could be faulty...

Q: Engine flooding with fuel

Hi there. From the description you have provided, your vehicle's exhaust leak on the driver's side has caused several issues for you. Assuming you have followed procedure in replacing your engine's head gaskets and all is correctly reassembled, it could...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...