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Old 09-12-2011, 11:26 AM   #1
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Dash Air ??

On my 2003 Newmar FL Diesel Pusher with Cummins 300, the dash air started to act up yesterday. When turned on I had warm air, a little later I had cold air, and then back to warm air.

I took top the shop for analysis this morning, but wonder if you folks have any suggestions so I am more aware of what to expect.

Thanks,

Dave
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Old 09-12-2011, 03:33 PM   #2
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My mechanic says that it is either a clogged dryer, bad valve, or both.
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Old 09-16-2011, 05:14 PM   #3
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Quote:
Originally Posted by Dave1956 View Post
On my 2003 Newmar FL Diesel Pusher with Cummins 300, the dash air started to act up yesterday. When turned on I had warm air, a little later I had cold air, and then back to warm air.

I took top the shop for analysis this morning, but wonder if you folks have any suggestions so I am more aware of what to expect.

Thanks,

Dave

I had a similar problem with my Horizon. It turned out to be a leaking vacuum hose. The 12V vacuum pump was running almost constantly.

Don
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Old 09-17-2011, 02:59 PM   #4
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my mechanic replaced a failed valve and dryer, recharged it and it is blowing really cold! I had almost 40 degree difference from return to vent...just in time for two week trip.
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