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Will changing the EGR valve on a 99 Mazda Millenia 2.5l solve a check engine light which is indicating an EGR valve flow malfunction?

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2011-09-13 17:47:49
2011-09-13 17:47:49

Mazda is ford,,been changing alot of dpfe sensors,,whats the code your getting,,p0402 excessive flow?????

Answerwell like the other guy said Mazda is ford, but is not the same, what u need to do is take the throttle body out, buy a new gasket before u do that, don't put the old one back in there it my leak and cause more problems, after u remove the throotle body, look in it and u are going to see to holes inside of it, what is happening is that does hole are plug with carbon and that is why the egr doesnt have flow, u need to by some cleaner and clean all inside the holes, i use a small screwdrive like a pocket screwdrive and bend it enough to get in there, if u have air blow in them but carefull it will slpash back in your face, that should solve your problem Answercheck vacuum lines and solenoids...all are located at the top rear of the engine AnswerRemove your throttle body and you will see a hole about the size of your index finger on the left of the intake passage. It will be plugged with carbon and oily deposits from the PCV valve. Clean this thouroughly, replace the throttle body gasket and any wiring, vacuum lines you removed! No more P0400 code.
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