Dash Air ??

[Dave1956]

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

[Dave1956]

My mechanic says that it is either a clogged dryer, bad valve, or both.

[Petro]

Quote:

Originally Posted by Dave1956 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

[Dave1956]

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.