Mazda Protege-Wont pass NOx emissions-Any help for a newbie?

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Mazda Protege-Wont pass NOx emissions-Any help for a newbie?

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Mazda Protege-Wont pass NOx emissions-Any help for a ne... - 8/7/2008 8:28:59 AM

brad_rolader

Posts: 2
Joined: 8/7/2008
Status: offline

Sweet place. Glad I found this forum. This is my first Mazda and seems to be a pretty good car over all. It fails the NOx emissions test however so I cant get it registered. A local mechanic told me the EGR vale was probably plugged up but saiid it would be 3-500 to repair it which is more than I can afford. Any help or info would be appreciated! How do I make this car pass??? The allowance on the NOx is 2.50. Mine is putting out 2.59. It passes the HC and CO with ease. Also states catalytic converter passes, oxygen sensor passes, everything else good except NOx.

Plese help! This is my only car and if I get pulled over with expired registration they will tow it. It will put us on the street with no way to pay rent or get to work! Please help!

_____________________________

Thanks

BR

Post #: 1

RE: Mazda Protege-Wont pass NOx emissions-Any help for ... - 8/7/2008 12:53:48 PM

sstlaure

Posts: 2321
Joined: 11/28/2005
Status: offline

Man....that''''s a pretty close reading. I''''m not exactly sure how accurate those tests are. You may be able to just retest and pass (.09 is only 5.4% off.) Not sure if it costs you anything to get it tested, but you may want to give that a try.

Or replace the EGR Valve (Exhaust Gas Recirculation Valve) yourself for less than $50....here''''s what a quick ebay search drummed up. It will be located on your exhaust and would route exhaust gasses back up into the intake.

http://shop.ebay.com/items/_W0QQ_nkwZegrQ20valveQ20protegeQQ_armrsZ1QQ_fromZQQ_mdoZQQ_sopZ12

Are you tripping any codes? I believe P0400 is a faulty EGR valve (Check Engine Light would be on.)

< Message edited by sstlaure -- 8/7/2008 1:05:21 PM >

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2004 Mazda6 Sportwagon

Any statements made are purely my opinion

(in reply to brad_rolader)

Post #: 2

RE: Mazda Protege-Wont pass NOx emissions-Any help for ... - 8/8/2008 6:28:45 AM

brad_rolader

Posts: 2
Joined: 8/7/2008
Status: offline

Thanks for the reply and info!

No, its not tripping any codes and no CHECK ENGINE light on. I will take it to Autozone today and see what their plug in tester says.

I did put some high octane gas and some engine cleaner for high mileage vehicles and drove it to clean it out, but when I took the car back for retest, it was a slightly worse reading than the first time... You get 1 free retest, which I used yesterday, so I have to pay next time.

All the local parts stores carry the EGR valve but it is about $120. Cheapest Ive found is $106 way across town and I dont want to be driving the car that far with expired registration. If they pull me over, they will tow it.

Thanks for the reply,

BR

(in reply to sstlaure)

Post #: 3