Replacing the EGR valve on a 2005 Ford Focus Zx4 is a relatively simple task that can be completed in about an hour. The EGR valve is responsible for recirculating exhaust gas back into the engine, which helps to reduce emissions. Over time, the EGR valve can become clogged with carbon deposits, which can cause the engine to run poorly. Replacing the EGR valve can help to improve engine performance and fuel economy.
To replace the EGR valve, you will need the following tools: