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Old 07-25-2011, 09:47 AM   #1
BV22
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Default The return of P0410

It's back! After 3 months and 6000 miles, my SES came back on with P0410 code. As I am now well versed with this system, I have completed a thorough diagnosis:
1. Air pump runs on cold start for 30 seconds or so
2. Air flow has been verfied by pulling the hose off the diverter valve while air pump is running
3. Vacuum is present at diverter valve actuator during air pump run
4. Removal of air tube shows good exhaust flow from the open hole, and no air from the valve.

So, my question is, can the diverter valve be disassembled, cleaned and restored to operability? I remember this was a rather expensive, dealer only part.

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Old 07-25-2011, 10:34 AM   #2
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Default Re: The return of P0410

It should open when you draw a vacuum on it. It is probably just stuck so blow it out and see if you can get it to open. Carb cleaner will help.

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Old 07-25-2011, 11:31 AM   #3
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Default Re: The return of P0410

Thanks - I'll give it a good cleaning and see if I can get it to open again with vacuum applied.

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Old 07-25-2011, 09:18 PM   #4
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Default Re: The return of P0410

Mine is back too.
Changed the ECTS and the EGR valve.
No luck.
Any suggestions?

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Old 07-25-2011, 10:54 PM   #5
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Default Re: The return of P0410

If you are setting a P0410 then the ECTS and/or EGR will not have any direct impact on that code.

Have you run through the richpin video on fixing the system? If everything functions up to injecting air into the manifold port the problem is probably carbon in the 4 small ports into the head from the manifold channel.

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Old 08-12-2011, 09:49 AM   #6
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Default Re: The return of P0410

No such luck, I'm afraid. I removed and disassembled the diverter valve. The passive, check valve section was reasonably clean and the flappers moved with ease. The actuated side was easy to open with a finger, and sprung back closed, but does not open with vacuum applied. So, the actuator is bad, and this does not appear to be serviceable.

Guess a trip to pick and pull is in order, although I saw a diverter valve at an online supplier for $18. No photo though, and since the dealer wants $140 for the part, I am suspicious.

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Old 08-12-2011, 10:30 AM   #7
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Default Re: The return of P0410

2121000 is the part number, check here.
Saturn OEM Parts Source
GM Parts Giant- http://www.gmpartsgiant.com/
GM Parts Direct- http://www.gmpartsdirect.com/
Get Saturn Parts- http://www.trademotion.com/splash/in...?siteid=214643
Your local dealers - http://www.partsvoice.com/

GM Parts Direct will sell you one for a bit less than 1/2 that price delivered.

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Old 08-12-2011, 12:46 PM   #8
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Default Re: The return of P0410

Thanks OldNuc. Could I trouble you to recheck that p/n? When I search it at gmpartsdirect the search comes up empty.

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Old 08-12-2011, 01:48 PM   #9
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Default Re: The return of P0410

Never mind - found that there is one more '0' in the p/n elsewhere on this site. Part is ordered and on the way. Thanks again for your help.

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Old 08-12-2011, 02:25 PM   #10
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Default Re: The return of P0410

I seem to be having trouble with Zeros recently....

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Old 08-24-2011, 11:05 AM   #11
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Default Re: The return of P0410

Diverter valve arrived from gmpartsdirect yesterday for about $65 including shipping. I installed it last night, and the SES went off during the commute to work this morning (I let it self-correct on purpose to make sure there were no other codes hiding under the P0410).

Thanks again OldNuc for the p/n and suggested source.

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Old 08-24-2011, 12:13 PM   #12
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Default Re: The return of P0410

Put the system on the 20,000 mile carbon removal program and the diveter will last longer.

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Old 03-19-2012, 04:35 PM   #13
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Default Re: The return of P0410

Quote:
Originally Posted by OldNuc View Post
Put the system on the 20,000 mile carbon removal program and the diveter will last longer.
What is the "the 20,000 mile carbon removal program"

????

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Old 03-19-2012, 04:56 PM   #14
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Default Re: The return of P0410

Take the hard tube/ rubber hose to air pump and diverter valve of the car and clean them. Start engine with the hard pipe removed to blow out any accumulated carbon from the manifold. Clean the EGR at the same time.

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Old 03-19-2012, 08:02 PM   #15
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Default Re: The return of P0410

Quote:
Originally Posted by OldNuc View Post
Take the hard tube/ rubber hose to air pump and diverter valve of the car and clean them. Start engine with the hard pipe removed to blow out any accumulated carbon from the manifold. Clean the EGR at the same time.
OK, I was just not aware that procedure had a name, LOL. Time for an acronym? 20000 MCRP? LOL

I did that about 5000 miles ago.

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Old 03-19-2012, 09:25 PM   #16
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Default Re: The return of P0410

It is one of those things that you do not see listed but you discover you need to do it or you end up replacing parts and disassembling more than you wanted.

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Old 03-20-2012, 05:19 PM   #17
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Default Re: The return of P0410

awesome tip.

I already knew about regular EGR cleaning and my 02 head is practically new (cleaned manifold too).

But I never thought about cleaning up the diverter valve preventively.

.... Adds project to list...

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Old 03-20-2012, 05:26 PM   #18
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Default Re: The return of P0410

Clean the EGR at the same time and blow out the manifold and EGR port. Just remove the EGR and the pipe from the diverter to the exhaust manifold and start it up.

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Old 04-03-2012, 04:05 PM   #19
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Default Re: The return of P0410

Still getting to know my latest addition, the 2001 SC2.
On top of wheel bearing noise, fuel gauge always reading empty, and a almost non-existant ignition key/cylinder problem...that had a rather miracle cure this morning... ), even though it was not showing a maintenance light, I put the code reader on it so something would not sneak up on me.
IT CAME UP with this PO410 code every time.

My other saturns did not have this tube running to the exhause manifold...
Is that what I need to disconnect and blow out? In addition to cleaning the EGR valve? Where is this pesky little air pump?

Is there a one stop link for this procedure over in the HOW TO section? If so, I did not look far enough...
Thanks!

RBar

Quote:
Originally Posted by OldNuc View Post
Clean the EGR at the same time and blow out the manifold and EGR port. Just remove the EGR and the pipe from the diverter to the exhaust manifold and start it up.

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Old 04-03-2012, 04:28 PM   #20
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Default Re: The return of P0410

Search YouTube for richpin06a saturn P0410 and follow the instructions to the letter. If that does not fix it then remove the exhaust manifold and clean out the ports and use new gaskets when yo put it back together.

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