How Do I Know If My EGR Valve Is Bad? - Fixanswer

The 2006 Chevy Silverado EGR valve is

located adjAccent to the engine oil cap

. EGR stands for Exhaust Gas Recirculation. … You would only need the new valve and gasket, ratchet, extension, and a 10mm socket. After removing the two bolts You can lift the old EGR and disconnect it.

What does a bad EGR valve sound like?

Knocking noises from the engine can be caused if the EGR is constantly closed. This is because at low rpm the fuel ignites early when it meets the high temperature. Detonations are also common as a second ignition can occur after the normal ignition.

Can I drive with a bad EGR valve?

Can I drive with a bad EGR valve? Technically,

you can drive your vehicle with a bad EGR valve

, but your vehicle will run rough, shake at idle, and a check engine light will be illuminated. You might also hear popping sounds while driving down the road.

Can I disconnect my EGR valve?

If you unplug it, while the truck is off, then

the EGR will stay closed

. If the EGR valve is clogged or completely blocked off it can longer re-burn harmful emissions in the combustion chamber. You're now sending the exhaust gas away from the engine when using an EGR delete kit, which means it begins to run cleaner.

Where is the EGR valve located on a 2004 Chevy Silverado?

The EGR valve is located

directly in front of the engine's oil filler cap

.

Can you clean an EGR valve?

To clean the valve, wear an acid-resistant pair of gloves. Put on safety glasses, too, as the carbon deposits could become airborne in the process.

Spray the EGR valve cleaner onto the carbon deposits

. Remove the carbon buildup with the use of a pipe cleaning brush and dull scraper.

Where is the EGR valve on a 2004 Chevy Silverado?

The EGR valve is located

directly in front of the engine's oil filler cap

.

What happens if EGR valve is blocked?

If the EGR valve clogs or is completely being blocked off, it

can no longer re-burn harmful emissions inside of the combustion chamber

. The NOx emissions will flow unregulated through the combustion chamber and out of the exhaust pipe. The excessive NOx emissions will show up during a smog test and cause failures.

Can a dirty EGR valve cause a misfire?

An EGR valve that is leaking can also act like a vacuum leak and cause a

random misfire

. … A bad fuel pressure relay can also leak pressure and prevent an otherwise good fuel pump from delivering full pressure to the injectors. Dirty injectors can also restrict fuel delivery and cause a lean fuel condition.

Is it worth cleaning EGR valve?

Cleaning your EGR valve will solve your car's engine performance issues related to any clogging or system passages problem with the valve. Even more importantly, it'll

prevent serious engine damage and expensive repairs

. … In severe cases, this develops into violent detonations that will seriously damage your engine.

How much does it cost to fix EGR valve?

The average cost for an EGR Valve Replacement is

between $314 and $399

but can vary from car to car.

What causes EGR valve failure?

The failure of the EGR valve on the vehicle is not out of the ordinary, as this issue can arise on most modern diesel engines. The failures are usually caused by

a build-up of deposits in the EGR valve over a period of time that causes them

to stick.

Will a car run without EGR valve?

Yes, it is possible, though not recommended

, to run a car without an ERG valve. Doing so may impact the environment, but it's not harmful to the car engine itself.