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08-02-2016, 07:36 AM
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#15
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Senior Member
Join Date: Nov 2014
Posts: 1,150
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Quote:
Originally Posted by Gary8346
BTW, I've never been able to change the engine idle with the cruise control. I understand that you just hold the RES button down to increase idle but it doesn't work for me.
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Turn the cruise control on and press the SET button once to set high idle. I understand you can also set it a little higher by using the throttle to get it where you want and pressing set, but have never tried it.
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08-02-2016, 07:43 AM
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#16
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,932
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Check the rubber boots on the intake system. A loose clamp that holds the rubber boots to the intake tubes will allow turbocharged air to escape and makes a screaming noise. It usually leaves a mark on the tube.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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08-02-2016, 01:04 PM
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#17
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Senior Member
Join Date: May 2014
Posts: 868
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To check your idler pulley, take off your belt and then spin the idler pulley by hand. If you hear any noise, replace the bearings. I just did mine. Also do the same thing to the alternator.
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08-02-2016, 01:11 PM
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#18
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by Gary8346
I've been hearing an intermittent engine noise lately from our 400 HP isl dp, usually at low rpm. It sounds a little like a loose fan belt but I replaced mine just a couple of years ago when I replaced the fan. I also thought it might be the PAC break leaking exhaust but I replaced that two years ago also. It only happens when moving so it's hard for me to locate it since I'm the only one who drives.
I suppose should have it diagnosed by a mechanic, but everyone is about two weeks out just to look at it and we are on the road about 2500 miles from home. Everything else is working great. My coach is a 2006 diplomat
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Gary8346
Have you checked the serpentine belt tensioner?
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08-02-2016, 11:10 PM
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#19
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Senior Member
Join Date: May 2012
Posts: 2,947
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Quote:
Originally Posted by ga traveler
Check the rubber boots on the intake system. A loose clamp that holds the rubber boots to the intake tubes will allow turbocharged air to escape and makes a screaming noise. It usually leaves a mark on the tube.
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Do you have pics.
Sent from my iPhone using iRV2 - 2008 Monaco Camelot 40 PDQ
__________________
Perry & Julie: 2008 Monaco Camelot 40PDQ, 400ISL, Toad; 2015 Chevy Equinox.
[SIGPIC][/SIGPIC]
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08-02-2016, 11:36 PM
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#20
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Senior Member
Join Date: May 2012
Posts: 2,947
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Quote:
Originally Posted by zmotorsports
The exhaust manifold is common on these. I had three broken bolts on our ISL when we bought the coach back in 2007 that I removed the manifold, trued it up and extracted the broken bolts then reinstalled using new Cummins OEM bolts and gaskets. It has been fine for the past 55k miles until our last trip when the manifold broke. I have a youtube video of the replacement procedure as well as truing up the manifold. I would not however suggest you double up on the gaskets. I would however, suggest that you apply some antiseize to the fasteners as it aids in removal tremendously for the next time.
Here is a link if interested.
youtube.com/watch?v=ymlYNwHyS3A
As for the noise, I would suspect the tensioner. I had one start making noise around 80-ish thousand miles and replaced mine.
Mike. |
Mike always enjoy your instructions. I'll check my serpentine tensioner and the exhaust manifold. Hopefully with 94k in miles the previous owner had this repair completed.
Sent from my iPhone using iRV2 - 2008 Monaco Camelot 40 PDQ
__________________
Perry & Julie: 2008 Monaco Camelot 40PDQ, 400ISL, Toad; 2015 Chevy Equinox.
[SIGPIC][/SIGPIC]
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08-03-2016, 02:24 AM
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#21
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Senior Member
Monaco Owners Club
Join Date: Mar 2011
Posts: 889
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Quote:
Originally Posted by znt1186
Turn the cruise control on and press the SET button once to set high idle. I understand you can also set it a little higher by using the throttle to get it where you want and pressing set, but have never tried it.
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Press the SET once to engage, then RES to continue to increase, or SET to decrease RPM's.
Turn the cruise OFF or touch the brake pedal to disengage.
Paul
__________________
Paul Whittle
2005 Monaco Signature 45'
525 HP/1850 Ft Lb ISX-15/6-Speed Allison 4000
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08-03-2016, 06:35 AM
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#22
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Senior Member
Monaco Owners Club
Join Date: Feb 2009
Location: Utah
Posts: 2,893
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Quote:
Originally Posted by 10Boomer
Mike always enjoy your instructions. I'll check my serpentine tensioner and the exhaust manifold. Hopefully with 94k in miles the previous owner had this repair completed.
Sent from my iPhone using iRV2 - 2008 Monaco Camelot 40 PDQ
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Thank you. I am glad you found it informative.
Mike.
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08-03-2016, 08:42 PM
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#23
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Senior Member
Join Date: May 2012
Posts: 2,947
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Quote:
Originally Posted by zmotorsports
Thank you. I am glad you found it informative.
Mike.
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Mike , thx it just added to my list, treading on new grounds! 😬
Sent from my iPhone using iRV2 - 2008 Monaco Camelot 40 PDQ
__________________
Perry & Julie: 2008 Monaco Camelot 40PDQ, 400ISL, Toad; 2015 Chevy Equinox.
[SIGPIC][/SIGPIC]
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08-04-2016, 06:09 AM
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#24
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,932
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Quote:
Originally Posted by 10Boomer
Do you have pics.
Sent from my iPhone using iRV2 - 2008 Monaco Camelot 40 PDQ
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Sorry, No pictures. When you are working on one to eight motorhomes a day, It doesn't leave much time for pictures. We ran into this several times. It was not that uncommon.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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08-04-2016, 06:36 AM
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#25
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Senior Member
Monaco Owners Club
Join Date: Feb 2009
Location: Utah
Posts: 2,893
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Quote:
Originally Posted by 10Boomer
Mike , thx it just added to my list, treading on new grounds! ��
Sent from my iPhone using iRV2 - 2008 Monaco Camelot 40 PDQ
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You're welcome. Glad you found it helpful.
Mike.
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08-06-2016, 09:45 PM
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#26
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Member
Monaco Owners Club
Join Date: Jan 2014
Location: Florence, OR
Posts: 77
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Thanks everybody for your replies. I took it to Cummins in sieux falls, SD who determined that I had a blown exhaust manifolds gasket. They replaced gasket and manifold in about four hours. About $1800 parts and labor covered by our extended warrantee. Seemed very fair and quick. While I was there I had a full engine, generator and chassis service so we are ready to go this winter.
__________________
Florence, Oregon
'06 Monaco Diplomat 38PST
'19 Jeep Wrangler Toad
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