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Mazda Millenia EGR problem

24 messages,  Last post on Sep 16, 2009 at 1:04 AM

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#5 of 24 Re: EGR problem with 1999 Mazda Millennia [kaczjones] by jennifertn Jul 28, 2007 (9:16 pm)
Replying to: kaczjones (Mar 23, 2007 12:10 pm) I have had this problem for 3 years, the only way i past emition last yearr was because a friend new a friend that passed me. Dont know what im going to do this year. Mazda cant fix the problem
#6 of 24 Re: EGR problem with 1999 Mazda Millennia [lovemykids] by jazzyman26 Aug 08, 2007 (6:10 pm)
Replying to: lovemykids (Jun 07, 2007 7:49 pm) I'm having the same issue with the CEL light 01 2.5 for the pass year didn't pass emission was able to get trough it in 06.Replace two sets of converter o2 sensor EGR valve clean smoke test perform still CEL light on.Back and forth to the shop original converter was tested and fuctional TSB on the o2 sensor.Can't drive the due to expire tag I had 2 temporary tag can't receive anymore,notified the Dept of Safety in Tenn about this situation to request a hardship so I can bypass emission to drive the back and forth to work and have more test perform. and possible an EPA issue. The last diagnostic code P0431 if anyone can help does this code mean I need a converter or pre cat? and what web site I can find a pre -cat and price.I don't want to trade the car looking to move into another house don't want another bill.If this continue I might not have any choice but to trade.I went to three independent dealer and was told to replace the cat converter,but the mazda dealer stated that I need pre-cat talk about confusion.Need help Replies to this message: chozen (Sep 10, 2007 11:36 am) tommyqua (Oct 30, 2007 8:34 pm)
#7 of 24 CEL Light On Mazda Millenia 01 2.5 by jazzyman26 Aug 09, 2007 (9:49 am)
1. Replace both 02 sensor code reset. 2. P0420 code cat convertor 3.Replace fron and middle converter code reset 4.P0431 code appears again 5.replace both cat convertor CEL still on 6.TSB on both 02 sensor 7.02 sensor replace CEL still on 8. Pass emission in 06 9.Diagnostic perform from 3 other dealer Cat code 10.Tenn Dept of Safety State emission analyzer code P0431 11. Mazda Dealer might need pre-cat due to Codes P0431 12.EGR Valve clean                                                                                                     Jazzyman
#8 of 24 Re: EGR problem with 1999 Mazda Millennia [jazzyman26] by chozen Sep 10, 2007 (11:36 am)
Replying to: jazzyman26 (Aug 08, 2007 6:10 pm) I have had a 1999 and a 2000 Millenia. The EGR value issue is a big chaotic problem, yet with a simple solution. If you take the intake off the throttle body, and remove the four screws that hold the throttle body on and remove it also. You WILL see a really clogged hole in the bottom. If you take some engine cleaner, and spray it in it will break up the build up. I usually straighten a paperclip and clear the hole that way, but I think it would be better to instead of letting it fall through, picking it out. The check engine light will stay off, until there's another buildup. It is hardly ever the EGR Valve. Only few mechanics know this, so when they replace the EGR and it still does the same, you are all confuse. Wierd enough, you may also have carbon deposits in your exhaust, please don't check it while it's running. LOL
#9 of 24 For those with the TCS off and intermittent stalling problem....a solution by megaquark Oct 07, 2007 (1:07 pm)
Had the same problem a few years ago. There is a EGR sensor (or something like that) that is up in the middle slightly to the passenger side right up by the firewall. It plugs into a harness. It has a Mitsubishi emblem on it. Take it out. Start the car. Always have the TCF off light on and the engine light, but no more stalling.   (note, this is a completely different problem from the previous one I just posted- I felt that if I was asking, I might give something back)   Apparently this car has a history of a faulty computer that turns the TCS off light on when it shouldn't. So the TCS off light is misleading. It has nothing to do with the TCS - it's emissions. Removing the sensor has solved the problem on 4 others that I know of. Happy driving!
#10 of 24 Re: EGR problem with 1999 Mazda Millennia [kaczjones] by tommyqua Oct 30, 2007 (8:29 pm)
Replying to: kaczjones (Mar 23, 2007 12:10 pm) same problem here 99 Millennia S. have been driving with the Check Eng Light on for almost a year. Recently it started to blink. took it in to Firestone for Diag; they told me i have PO-431 Ignition coil #4 mised fire and typical O2 sensor issue. I plan to chang my spark plug this weekend. Don't spend money on O2 and anything more than a Thousand dollars repair just ignord it as long you have AAA just drive this car and have a good time - I really like this car but have no intention to upkeep it, cars are losing proporsition from day one. just gas and zoom.
#11 of 24 Re: EGR problem with 1999 Mazda Millennia [jazzyman26] by tommyqua Oct 30, 2007 (8:34 pm)
Replying to: jazzyman26 (Aug 08, 2007 6:10 pm) PO-431 mean mised fire - replace the ignition coil. go to Pepboys they sell it for $149, $90 installation. replace the spark plug yourself but i think you can only buy the distributor cap from the dealers. Diag at Firestone is about $59 but i believe you can get a free one from PeppBoys.
#12 of 24 Re: EGR problem with 1999 Mazda Millennia [lovemykids] by goodcar Mar 15, 2008 (1:01 pm)
Replying to: lovemykids (Jun 07, 2007 7:49 pm) Duh!! In it for the money? Do you really think so?

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