Here is some info on the EGR Valve: What Does Your Car's EGR or Exhaust Gas Recirculation Valve Do?: This is a typical EGR valve. It's easy to clean or replace your EGR valve if your car or truck's performance starts to suffer.
"Maybe Rick "Death" Perry + the IDIOTS that voted him back into office will be able to pray in some new drinking water!!! The non-stupid people of Texas pray for a governor with a triple-digit IQ. While you’re waiting to see how that works out for the citizens of West Texas, take some time to watch this interview with Antonia Juhasz, an oil and energy analyst, author, and journalist."
This guide shows you how to locate, remove & clean your exhaust gas recirculation (EGR) valve on Renault Trafic, Opel / Vauxhall Vivaro & Nissan Primastar vans. Cleaning helps your diesel engine run smoothly and it's possible to bypass the valve to increase performance & economy.