Removing , cleaning egr valve in 2004 mittsubishi eclipes

SOURCE: EGR Valve needs cleaning or replacing

The link below is a diagram of the EGR valve. Looks like a mushroom with vacuum lines attached.

http://www.chiltonlibrary.com/content/images/8666/images/86664018.gif

Instructions:

SOURCE: My 2004 mitsubishi galants egr

Hi, the "dirt" that clogs your EGR valve and intake manifold is not dirt in the traditional sense. The dirt in this case is carbon buildup from your engine and emissions. When the carbon builds up to a certain point, it hardens and forms a residue. This residue will ultimately clog your intake manifold and EGR valve, stopping them from functioning properly and causing the rough idling and stalling.

Carbon buildup is caused by not burning all the gas going through the cylinders. This can be caused by many different things including using bad gas, driving around in the city too much, and not having enough spark in the engine, but the main cause of carbon buildup is driving too carefully. Driving slowly and safely and carefully every single day puts a lot of pressure on the engine. Driving like a maniac isn't good for your vehicle all the time either, but occasionally it is good to break out of your normal rhythm.
Unless there seems to be a major problem try to keep the car at a steady acceleration until its ride is nice and smooth. You may need to stop the car and then start over by punching the gas pedal again. This way you don't accelerate past the speed limit allowed on the road. It is the rapid acceleration part that burns off the carbon, not the speed, so don't risk a speeding ticket. When the vehicle seems to respond to the gas pedal easily and undergoes no more choking, you've gotten rid of the excess buildup. Try to gun it occasionally each month to prevent more carbon from building up. A few minutes of consistent acceleration will keep your engine nice and clean.


If you have a lot of exhaust coming out in a steady stream and it is blue or black, stop accelerating immediately. There could be something wrong with your engine and you don't want to aggravate the problem by trying to burn off the carbon. Different colored smoke means different things. Blue, usually there's oil in your gas mixture. Black usually means you have bad valves in your engine. Take your vehicle to an auto shop and tell them about the color of the smoke and the amount. You probably have bad rings or need a valve job.

L Pfaff

• 11573 Answers
• Posted on Dec 19, 2014

SOURCE: I have a 2002 mitsubishi lancer with code P0401..Have replaced egr valve, catalytic converter, o2 sensor, removed and cleaned exhaust manifold and replaced vacuum hoses, and replaced mass airflow srns

check out this link on youtube, vacuum hose running to EGR may have a small restrictor in it that could plug and needs blown out.
http://youtu.be/W6ppMaDf4wQMitsubishi Lancer P0401 EGR valve repair video