Mazda 6 running/starting problem - Page 2 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #11 of 20 (permalink) Old 09-14-2012, 06:51 PM Thread Starter
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Dave,

now I have another problem..."Check Engine" from time to time lights. When it's ON, it stays on for day or two, then it gets OFF.

What kind of a problem this can be?

Thanks
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post #12 of 20 (permalink) Old 09-16-2012, 07:37 AM
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Drozer, you'll need to get the codes read otherwise i'm just grasping at straws, it really could be anything.

Dave
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post #13 of 20 (permalink) Old 10-13-2012, 07:37 PM Thread Starter
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Hi Dave,

I've been to mazda service and they told me that the problem was in the Protege Vacuum Switch Valve (96 Mazda Protege Vacuum Switch Valve VSV #K5T49091 KL015905 | eBay).
The problem that I had is that "Check Engine" lights from time to time.
In the mazda shop told me that this is not a big problem, and that this is a common error of this kind of models.

So, can you tell me, the real function of this valve, and how "big" is this problem?

Thanks,
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post #14 of 20 (permalink) Old 10-18-2012, 08:26 AM
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Hi Drozer,i've never heard of such a switch! i've googled it and it seems to have something to do with the EGR valve, so i've looked in the workshop manual and there is a valve that controls the EGR (EGR solenoid valve).
Have you cleaned your EGR yet? if not i would try that.
The valve helps control emissions but can cause running problems if it gets blocked up.

Dave
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post #15 of 20 (permalink) Old 10-21-2012, 05:39 AM Thread Starter
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I haven't clean the EGR valve yet. Also I have notice that when my car is in neutral speed, and I hit the accelator paddle, there is a little bit black smoke coming out from the EGR valve.
Definitively I'll clean the EGR valve ASAP.

Thanks ones again Dave...
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post #16 of 20 (permalink) Old 01-17-2013, 05:36 PM
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I just want to say thanks to the forum for saving me a fortune! I have lived with the occasional stall, warm or cold, for perhaps a year. In the last month stalls became progressively more frequent, such that allowing revs to drop below even 1500 rpm would allow the engine to stall, after which re-starting was getting more difficult.
So ordered new Denso SCV from internet (125), had it fitted (10) - problem solved!
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post #17 of 20 (permalink) Old 05-30-2013, 06:04 AM Thread Starter
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Quote:
Originally Posted by slidey View Post
Hi Drozer,i've never heard of such a switch! i've googled it and it seems to have something to do with the EGR valve, so i've looked in the workshop manual and there is a valve that controls the EGR (EGR solenoid valve).
Have you cleaned your EGR yet? if not i would try that.
The valve helps control emissions but can cause running problems if it gets blocked up.

Dave
Hi Dave,
My problem with "Check Engine" is still on. I went to the mechanic again and they told me that this code is appearing as error: P2009 Intake manifold running control circuit 1!

Can you tell me where to begin to search?

Thanks
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post #18 of 20 (permalink) Old 06-05-2013, 01:40 PM Thread Starter
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Does anyone knows what can be my problem?
Can anyone suggest me what to do?

Thanks in advance,
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post #19 of 20 (permalink) Old 01-14-2014, 05:45 AM
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hi,can anyone tell me if a knackered scv valve would make the egr valve give a fault code saying insufficient pressure cheers mick
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post #20 of 20 (permalink) Old 01-14-2014, 09:34 AM
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No. DTP0401 detection conditions are described here
https://euroesi.mazda.co.jp/esicont/...2f1815300.html

Have you tried taking off EGR valve and cleaning it, easy DIY job.
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