Can you remove the EGR valve and the truck still run good
Chevrolet Q&AAsk Your Question
1991 Chevrolet S10 Blazer Question: EGR valve
Russ April 04, 2009, 21:30Master
Removing the EGR valve will cause your engine to increase emissions and fail your state smog inspection. If you remove the EGR valve and do nothing else you will have a large engine vacuum and exhaust leak.
Answer #2Visitor, April 27, 2010, 06:09
If you were to remove the EGR valve you will have an exhaust leak and and an intake manifold leak.If you know the valve is a good fit when it is not cycling you can remove and plug the vacuum line. Most likely the engine will start to ''ping'' since the manifold air is not being cooled by the exhaust...Try it.Emissions will rise during period of time EGR should be on.Your oxygen sensor will see this and may adjust the mixture too lean for performance capabilities.
Answer #3Visitor, May 27, 2010, 10:51
i had the same problem on my 1995. we tried cleaning it and had little improvment. then we took it off. it runs better and improved gas mileage
Answer #4Visitor, June 08, 2011, 17:58
you can remove the egr valve but you can also block it off and leave it on. Take the vacuum off and plug it then make a plate to go under it. A little gasket maker and some tight bolts and your good to go