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Old 04-29-2016, 08:18 AM   #15
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I think that you can still order the high idle function on a new Sprinter, but they are not standard equipment. I just had my 2011 Sprinter 2500 serviced prior to my departure Sunday for Oregon, and had a long conversation with the Mercedes Sprinter specialist about several issues.

Primary in this discussion was idling. Along with what has been stated above (most of which applies to Sprinter diesel engines) the biggest problem is excessive sooting of the EGR (exhaust gas recirculating) valve. This part has a wide and varied effect on the performance of both the engine and transmission and excessive idling WILL plus it with exhaust soot.

Even though I don't idle mine much, I replaced the EGR at 100,000 miles as a precaution. There are several Utube videos about how to clean one, which I have done to my original EGR and will probably have it re-installed at 200K, or whenever I notice issues with decreased fuel mileage or shifting anomalies, both of which are signs of a clogging EGR.
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Old 04-29-2016, 08:20 AM   #16
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Did you mean to quote me in that reply?
No referring to post 7 I think. Sorry!
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Old 04-29-2016, 02:36 PM   #17
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Old 04-29-2016, 02:45 PM   #18
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Actually as per some information, the filter can be cleaned by burning the particles on a highway high speed:

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Old 04-29-2016, 04:34 PM   #19
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Old 04-29-2016, 05:13 PM   #20
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Do you think this filter is the biggest subject of a negative effect caused by prolong idling?
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Old 04-29-2016, 06:11 PM   #21
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IIRC, the regen cycles are determined by the ECM and prolonged idling, which generates excessive particles, doesn't allow frequent enough regen cycles.

Pretty sure the "High Idle" option is still available since one of the main users of it is ambulances and police vehicles.
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Old 04-29-2016, 06:33 PM   #22
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Pretty sure the "High Idle" option is still available since one of the main users of it is ambulances and police vehicles.
But that's not guarantee that it's available on the Sprinters bought by Airstream. My 2012 Airstream/2011 Sprinter doesn't have it, as far as I know. If the van does have it I've never managed to activate it.
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Old 04-29-2016, 07:30 PM   #23
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But that's not guarantee that it's available on the Sprinters bought by Airstream. My 2012 Airstream/2011 Sprinter doesn't have it, as far as I know. If the van does have it I've never managed to activate it.
Didn't mean to imply that it was on the AIs, just that it was still a Sprinter option.

Might be nice to have tho to supplement that measly one ton rear A/C unit when parked.
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Old 04-29-2016, 07:35 PM   #24
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My 2011 doesn't have the 'particle killer' filter! Just the EGR valve that must watched. I drive a lot of highway miles and not so much stop & go, but still had to replace the EGR at 100K. No difference noticed after long hot drives either.
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Old 04-29-2016, 08:01 PM   #25
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So, got it )
And? the best decision to safe the engine on idling is to install the idling rpm increaser? How it is called, PSM parametric special modul, or somehow else?
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Old 04-29-2016, 09:02 PM   #26
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The hi idle feature is there to prevent cylinder wash down due to low cylinder temps.It will not make much difference to the egr valve.The dpf will see soot load increase during prolonged idling.The Rams have software that attempts to deal with this-not sure if Mb does or not
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Old 04-29-2016, 10:51 PM   #27
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All great posts so far but do remember that a limited cooling off idle at the end of a high speed run is perfectly acceptable; one to two minutes will slowdown and cool off the turbo. Also starting and idling for at least a minute before hitting the highway and placing a load on the motor is always a good idea as well.

Excessive idling is not good for newer engines, especially with the new low sulfur diesel fuels.

A very good post of the difference between new and old diesel is in this thread. A must read for diesel guys.

http://www.thedieselgarage.com/forum...ur-diesel.html

Or get an extended oiling system that will continue to pump oil around your engine for a certain amount of time.

https://www.rbracing-rsr.com/oilsystems.htm

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Old 05-01-2016, 03:58 PM   #28
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This might be an option:

http://www.midcityengineering.com/sp...ter-smart-idle
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