OK remember me 94 S10 Blazer 4.3 CPI started idleing rough and heated up. Everyone seems to think that this is an EGR problem, I didn't think it was because there is a new EGR on it. So I went and bought a code reader, the code that I got was a 32. Which is EGR, but the book that I have also says that it may be the Electronic vacuum regulator valve (EVRV) which controls the EGR vacuum. I can not find the EVRV, should I continue to look for it, does it make a difference, or should I just put the EGR valve on and hopes this solves the problem? Thanks in advance

 

what i would first is take the EGR valve off and see if there is carbon blocking the hole, if so clean it out and put it back on and see if ur car runs better if that is the problem keeps gettin in that whole u can buy gaskets w/ screens on them that keep the carbon from getting in there. much less costly than buying a whole new EGR vlave. Hope that works!

 

I just wanted to say thanks to Blazergirl15. I pulled of the EGR valve and cleaned everything out and put it back together and now it idles fine. Thanks so much for you input. DED

 

no problem, i had the same problem w/ my 93 blazer s10 4.3. the carbon getting in the EGR valve is a common problem in blazers. dont forget if it continues to get clogged u can buy gaskets w/ screens or u can just put a piece of screen between the gasket and the EGR valve. this is what i did and my blazer has ran fine since. -blazergirl15

 

where is the egr on a 2001 trailblazer? mine is running rough too at idle, kinda shakes like a vibration, rpms dont move much if any sits at about 500 - 550.

thanks