EGR Systems
Mazda Millenia
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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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The millenia P - has 2.5 liter engine, The Millenia S has a 2.3 liter engine

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No, the check engine light comes on when the computer detects a malfunction and sets a code.No, the check engine light comes on when the computer detects a malfunction and sets a code.

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What does this question ask? An engine code triggers the "Check Engine" light, indicating a system malfunction. No light = no code. That indicates all systems are within operable range.

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Just going on the information you've provided in the question, it's doubtful that the engine light is the cause of the deceleration. It's more likely that the light is correctly indicating the presence of whatever malfunction in the engine is causing the deceleration, and the engine malfunction is what you need to identify. Your local friendly mechanic is your best choice.

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The 626 and the Millenia share the same 2.5 liter engine,the only difference being the version in the millenia makes more power.

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