Mazda MPS Owners Club
https://www.mpsowners.co.uk:443/

NEW MEMBER MPS OWNER EGR VALVE FAILURE
https://www.mpsowners.co.uk:443/viewtopic.php?f=23&t=25849		 Page 1 of 1
Author:  Rob C [ Mon Jul 16, 2018 7:25 pm ]
Post subject:  NEW MEMBER MPS OWNER EGR VALVE FAILURE
Hi all,

My name is Rob and I own a 2009 Mazda 3 MPS Aero phase 1 which is standard. I fell in love with the MPS when I got to go around Thruxton race track. For a warm up I was taken out in a standard MPS and was blown away on the handling, it's grip, power and mature stylish race look. I knew I just had to own one, one day.

It saddens me to say my MPS has developed an annoying problem regarding the EGR valve! I was driving back home whilst going up a hill I put my foot down to over take a car, at that point the car violently cut out at 3 & half 4 thousand rpm killing all power and once I let off the power, and put my foot down again in the higher revs the power was back! it has been into different garages, I have had EGR valves swapped over (which I can't believe it is coincidence both EGR units failed) I have had it cleaned the car has also recently had one of the big services, new oil, plugs, filters etc.

I feel I am left with two options:

1. Buy a new EGR valve at £300+ (not including labour costs)

2. Blank off the EGR and have it remapped?

I personally prefer option two but have no idea if this will work?? Can anyone help or advise where they have had a similar situation/dilemma they have experienced and what they did to fix an EGR failure??

Look forward to learning all about it, and hearing any possible remedies.

Thanks
Rob
Author:  Spam man [ Mon Jul 16, 2018 7:32 pm ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Blanking the egr doesn’t require a remap.
Author:  DJJUT [ Mon Jul 16, 2018 9:17 pm ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
What makes you thing it is an EGR issue? An EGR problem won't cause the harsh cut you mentioned...... this sounds like a fuel cut that the ECU would administer if a boost or engine load safety limit had been exceeded.

Have you checked for any engine management codes at all? The fuel cut code P0234 will not illuminate on the dashboard. Is your car completely standard?
Author:  Rob C [ Tue Jul 17, 2018 1:47 pm ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Thank you for the replies, the engine fault code coming up is saying EGR. I've had all the filters replaced, new spark plugs, fuel flush?

Yes the car is completely standard.

Oh ok, if the fuel code doesn't illuminate the code will still be visible once a device is plugged in? If that's the case both garages i've used could not see a fuel cut code?
Author:  DJJUT [ Tue Jul 17, 2018 2:16 pm ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Okay well that's interesting. I've never heard of a car cutting out because of an EGR. I run with it blanked off and no cut is evident.

Why not try taking the EGR valve off along with the pipe that connects to it at one end and the intake mani at the other and give them a clean with oven cleaner first?

I can give you a link of a how to if needed.

Sent from my SM-G930F using Tapatalk
Author:  Rob C [ Wed Jul 18, 2018 11:45 am ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Hi

Yeah it is very weird, the mechanic said it is possibly due to the valve in the EGR not fully opening causing the engine to cut out.

I do recall one mechanic trying it without the EGR and blanking it off and still the issue carried on whilst no EGR present.

Yes please if you could send a link that would be brilliant!

How easy would it be to identify the fuel code you mentioned? Is it a code that can be easily missed?

Thanks
Author:  richie3mps [ Wed Jul 18, 2018 2:50 pm ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Welcome to the club, where about are you based as maybe a local member to you could take a look for you
Author:  DJJUT [ Wed Jul 18, 2018 3:25 pm ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Rob C wrote:
Hi

Yeah it is very weird, the mechanic said it is possibly due to the valve in the EGR not fully opening causing the engine to cut out.

I do recall one mechanic trying it without the EGR and blanking it off and still the issue carried on whilst no EGR present.

Yes please if you could send a link that would be brilliant!

How easy would it be to identify the fuel code you mentioned? Is it a code that can be easily missed?

Thanks


Here is the how to for the EGR cleaning....

http://www.mazdaspeedforums.org/forum/f ... 3-a-50596/

The code should appear if read with a code reader. The fact that the mechanic blanked it off and the issue persisted along with all the MPS owners that have also blanked off or removed the EGR and don't have issues should eliminate the EGR as the cause in my opinion.

Give it all a clean up as that will at least allow you to get the EGR code cleared and then go from there :thumbs:
Author:  Rob C [ Tue Jul 24, 2018 7:28 am ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
If i were to blank of the EGR, like yourself DJJUT, you should be able to delete the code?
Author:  Spam man [ Tue Jul 24, 2018 7:55 am ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
He sure can. Via vt or Cobb..
Author:  phoenoxdancer [ Sat Sep 01, 2018 8:04 am ]
Post subject:  Re: NEW MEMBER MPS OWNER EGR VALVE FAILURE
Did this ever get rectified?
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