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01-02-2019, 04:12 PM
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#1
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Senior Member
Join Date: Nov 2010
Posts: 274
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Idling Question
Have brand new Dutch Star and it will not idle below 1200rpm. My question is this a freightliner problem or a Cummins problem? The cruise control is off. Thanks, Bill
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Bill and Alice
2000 Winnebago (sold); 2005 Tiffin Phaeton(sold)
2008 Phaeton (sold) ; 2017 Newmar 4037; 2019 Dutch Star 4369(last one) 
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01-02-2019, 04:58 PM
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#2
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Senior Member
Join Date: Jan 2018
Posts: 1,513
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Could be in either system, impossible to say until diagnosis is done. You don’t know if the chassis is not giving proper zero throttle input or of the engine has a problem. I would start at a FLCC shop as most are also authorized Cummins shops.
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Newmar Ventana 4037, 2023.
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01-02-2019, 06:05 PM
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#3
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: May 2013
Location: Springfield, IL
Posts: 1,070
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Is your allison trans shifting into gear at 1200 rpm?
Mine won't if rpms are over 800 so if it does I would suspect the rpm gauge is not registering properly.
Richard
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2011 Itasca Ellipse 42QD; 2012 Buick La Crosse; Retired US Army MSG (20 years AFS); Retired! Retired! 
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01-02-2019, 06:33 PM
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#4
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Senior Member
Join Date: Jul 2011
Posts: 134
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Quote:
Originally Posted by rrtribble
Is your allison trans shifting into gear at 1200 rpm?
Mine won't if rpms are over 800 so if it does I would suspect the rpm gauge is not registering properly.
Richard
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It is not a problem. It is a feature. Believe it? The idle is set to go that high when the dash air is on and the transmission is in neutral and the park brake is engaged. Turn the dash A/C off before putting the transmission in neutral and the idle should settle in at 800. Let me know if this works for you
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Bob Schlesinger
2018 Mountain Aire 4531
Freightliner
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01-02-2019, 08:29 PM
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#5
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Senior Member
Join Date: Nov 2007
Location: Charleston, WV
Posts: 3,469
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This issue has come up several times before. Always check that your A/C switch is OFF before starting the engine.
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John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
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01-03-2019, 05:56 AM
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#6
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Senior Member
Join Date: Jul 2011
Posts: 134
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Quote:
Originally Posted by Algoma
This issue has come up several times before. Always check that your A/C switch is OFF before starting the engine.
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And stopping the engine
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Bob Schlesinger
2018 Mountain Aire 4531
Freightliner
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01-03-2019, 06:08 AM
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#7
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Senior Member
Join Date: Nov 2010
Posts: 274
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Sorry I should have said that I had tried turning the dash air off with no change. This is my 4th cummins and 3rd Freightliner and have never had one idle this high unless I turned the cruise control on. Bill
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Bill and Alice
2000 Winnebago (sold); 2005 Tiffin Phaeton(sold)
2008 Phaeton (sold) ; 2017 Newmar 4037; 2019 Dutch Star 4369(last one)
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01-03-2019, 06:50 AM
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#8
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Senior Member
Join Date: Jul 2018
Location: Southeast Texas
Posts: 1,721
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Mine has a hidden idle adjust switch under the dash maybe it got pressed by accident?
Did it ever idle properly or suddenly went up?
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1998 HR Endeavor Cummins ISB 275 / Banks Allison 3060
20014Jeep Wrangler JKUR with M&G air brake with breakaway
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01-03-2019, 08:15 AM
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#9
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Senior Member
Join Date: Nov 2010
Posts: 274
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Update; Talked to Freightliner and they looked up my Vin# and said that it should only idle this high under a low voltage or regen situation. I asked if I should take this to cummins or freightliner and they said it should go to freightliner. Looks like a service call is in my future. Thanks for the replies. Bill
__________________
Bill and Alice
2000 Winnebago (sold); 2005 Tiffin Phaeton(sold)
2008 Phaeton (sold) ; 2017 Newmar 4037; 2019 Dutch Star 4369(last one)
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