Question about Chevrolet Impala
MY CHECK ENGINE LIGHT IN MY 2000 CHEVY IMPALA KEEPS COMIN ON AND THE PRINT OUT SAID EGR VALVE FAILED MY CAR IS STARTING TO RIDE REALY ROUGH DO I NEED TO GET THIS FIXED IMMEDIATELY
The EGR valve helps your car more efficiently and completely burn fuel by recirculating a portion of your exhaust and running it through the combustion process again. This results in a cooler, more complete burn of the fuel which decreases you car's noxious emissions by prohibiting the formation of some harmful gases.
The EGR valve is vital to your car's emission controls.
When the EGR valve goes bad, it must be replaced - it cannot be repaired.
The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. This exhaust mixes with the intake air and actually cools the combustion process. Cooler is always better inside your engine. The exhaust your EGR valve recirculates also prevents the formation of Nitrogen related gases. These are referred to as NOX emissions, and are a common cause for failing emissions testing. Unfortunately, your EGR valve can get stuck, causing NOX gases to build up. You'll know if your EGR valve is stuck or malfunctioning because your car will experience symptoms like rough idle and bucking on accelertaion.
The only short term problem is a decrease in gas mileage - but it should really be replaced before sensors become sooted or your cat. convertor gets overworked prematurely.
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Posted on Apr 15, 2009
SPRAY INTAKE CLEANER INTO BRAKE BOOST HOSE, IT GOES INTO THE INTAKE CHEAP AND EASY FIX..... DID I SAY CHEAP..
Posted on Jan 15, 2013
Take the negative battery cable loose for about an hour (30 min may be enough as recommended but I did it for an hour), after replacing the EGR valve. This clears all codes in the computer. Put a thin layer of high temperature silicone gasket sealer on it. Be extremely careful removing the inside bolt to the eGR valve so as not to drop it in the motor as I did. (The symptoms on my 2001 Impala was a jerking as if turning the switch on and off quickly).
Posted on Mar 31, 2012
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Posted on Jan 02, 2017
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