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first its an egr valve and its between the exhaust manifold and the exhaust pipe itself usually on the passenger side
Use the fuel brake cleaner or throttle body cleaner.
Where is the ERG valve located on a Chevy Vandura 5.7 350 engine?
An ERG is a unit of work. An EGR is a valve that usually sits on the manifold and is controlled by a vacuum diaphram.
The ERG valve on a 1999 Chevy Express van is near the carburetor. It is bolted on the intake manifold.
Right on top of the valve cover
If your EGR valve is vacuum operated, simply remove the vacuum hose from the valve.
I changed erg valve o2 sensor and gas cap but lights back on what do I do
"EGR" valve?
Depends on what its on. Most of the time that code indicates your EGR valve is bad and needs to be replaced. If its on a diesel engine, there is also a procedure call an "EGR delete" that will actually increase your horsepower and fuel efficiency. But your emissions might not pass e-check ???
If you mean the EGR (exhaust Gas Reclaimer), no.
You need to replace or clean the ERG valve. This will help with your milage too.