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08-06-2011, 09:01 AM
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#1
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Senior Member
Join Date: Jul 2011
Location: Indiana
Posts: 1,695
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A/C problems Freightliner
I have a new 2011 Coachmen Sportscoach (diesel pusher). When sitting still and idling, my dash a/c blows out very cold air. Start to drive and within a half mile the air blowing out is Luke warm to warm. Normal or not?
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08-06-2011, 09:27 AM
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#2
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Aug 2006
Posts: 1,500
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Is it a Cummins with a side radiator by any chance? If so, the air conditioner fins may be "stacked" with your CAC and Radiator and when driving you fan may not be able to push enough air all the way through all three. I only assume your fan does run. Then check run of the hoses going to and from the a.c. unit to see if they are in contact with anything hot.
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08-06-2011, 11:36 AM
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#3
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Senior Member
Join Date: Jul 2011
Location: Indiana
Posts: 1,695
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Thanks, I will check things out in the engine compartment. BTW it is a 340hp Cummins.
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08-06-2011, 12:49 PM
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#4
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Senior Member
Join Date: Oct 2006
Location: Rochester NY
Posts: 2,706
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Quote:
Originally Posted by slwohlford
I have a new 2011 Coachmen Sportscoach (diesel pusher). When sitting still and idling, my dash a/c blows out very cold air. Start to drive and within a half mile the air blowing out is Luke warm to warm. Normal or not?
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No, it is not normal. You have a brand new coach and the dash a/c should blow cold when it's idling or driving down the road.
You're under warranty. Take it to a Freightliner shop and have it checked out.
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Don
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX
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08-06-2011, 01:24 PM
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#5
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Aug 2006
Posts: 1,500
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[QUOTE=slwohlford;923593]Thanks, I will check things out in the engine compartment. BTW it is a 340hp Cummins. [/QUOTE
I think this is one of THOSE red engines. Maybe an IS-L. But what does a yellow engine guy know? In that case when you look at your side radiator the a.c. will be the only one or outermost one visible. On the forward side will be the two a.c. hoses. Good luck trying to get to them.
BTW how is your engine temperature climbing long, steep grades?
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08-06-2011, 03:17 PM
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#6
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Moderator Emeritus
Ford Super Duty Owner
Join Date: Aug 2000
Location: Bryan, TX when not traveling.
Posts: 22,945
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Since it is new coach, let the dealer fix it. At road speeds, the A/C should cool better. check that you do not have an outside air open or trying to go into heater mode.
Something is not right, so do not let the dealer snow you with typical B.S.
Ken
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08-06-2011, 03:42 PM
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#7
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Registered User
Monaco Owners Club
Join Date: May 2009
Posts: 3,198
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a/c should be ice cold all the time.
And a 340 hp sportcoach will be a rear rad, most likely a 6.7 liter ISB
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08-07-2011, 09:19 AM
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#8
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Senior Member
Join Date: Jul 2011
Location: Indiana
Posts: 1,695
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Thanks for the help
MH is scheduled into dealer next week for a two week remedy of small problems. I will insist that they take it to Freightliner if their tech is clueless for some reason.
This forum appears to be priceless in the future for receiving recommendations from folks that have "been there, done that". Problem is I don't know a muffler bearing from a kanootin valve.
We're headed for Disney World in September with my daughter's family of 7. Will be a bonding experience to say the least.
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08-08-2011, 12:34 PM
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#9
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Senior Member
Appalachian Campers Carolina Campers
Join Date: Apr 2008
Location: Wilmington, NC
Posts: 227
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Drake the rescue Yellow Lab
2005 Providence 39L - 2009 Buick Enclave
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08-08-2011, 02:24 PM
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#10
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Senior Member
Damon Owners Club Freightliner Owners Club
Join Date: Mar 2006
Location: North East Texas
Posts: 4,946
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Quote:
Originally Posted by slwohlford
I have a new 2011 Coachmen Sportscoach (diesel pusher). When sitting still and idling, my dash a/c blows out very cold air. Start to drive and within a half mile the air blowing out is Luke warm to warm. Normal or not?
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classic LOW charge (volume)
as your engine rpms ramp up the compressor has to move more refrigerant....if its low it cant move as much so the temps come up
since its new...i would suspect it is low or leaked out during sitting around waiting to be built or sitting on a lot, seals leak..
have it checked under warranty
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