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Topic: Dash A/C  (Read 1000 times) previous topic - next topic

Dash A/C

This has been around, but I can not find it now.
I read 51.5F output on the dash vent, Question, is this about right ?
Outside temp 86F as I am driving down the Interstate to ward Indy, IN. today.
Thanks
Dave M

Re: Dash A/C

Reply #1 –
Dave, that's more than good.  After having spent roughly $2000 having my dash A/C repaired during the past 6 years, mine is out of refrigerant again.  This time the refrigerant held for a whole year.  I'm at a loss as to what to do.  I consider the dash A/C a very important safety feature during humid and rainy conditions.  I wish I knew of a competent auto A/C shop around here.
Peter & Beth Martin
No Forrest? What have you done?
MC# 15890 until Dec 2016; FMCA #F329677
Cincinnati, OH

Re: Dash A/C

Reply #2 –
Peter go to your local thermo king. They fix truck refers and dash airs and can fix yup right up and usually have everything in stock. You have a leak and I brt it is in the linen running under the coach.if so they can connect a new linnet the ok'd one coat it in vaseoline and pull it through. They will find it. They found three leaks in one of my hoses. It hoed after being refilled but leaked out. Your coach is of the age when the lines will start to wear morem
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Dash A/C

Reply #3 –
Quote from: Dave M –
Peter, I agree on the bummer, I only know one shop that does it right, to the point of being fanatical. I have  Freightliner truck and the a/c started giving a problem, making noise etc etc.. After a new belt, filter/dryer and expansion tube kit or what ever, and a few hours, the system has worked perfect for over 2 years.  I remember those good shops.  For some reason, education always comes from the wallet.
Point of question; do I need to have him check the system over, is 52F OK etc.
Good luck

Dave

Dave, I will check for you tomorrow. I thought mine was colder than that. But who knows. I will get ambient and then dash temps.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Dash A/C

Reply #4 –
Dave, I really think that output temperature is very good.  You know there's a problem if the compressor begins to start & stop intermittently (watch the clutch at the compresor belt) and the dash air is not as cold as yours.  The high/low pressure switch causes the compressor to start/stop to protect itself.  Once the refrigerant pressure goes below the pre-set spec, the compressor will shut down completely.
Peter & Beth Martin
No Forrest? What have you done?
MC# 15890 until Dec 2016; FMCA #F329677
Cincinnati, OH

Re: Dash A/C

Reply #5 –
John, thanks for recommending Thermo King.  Lord knows while at Del Monte and Chiquita we used Thermo King units in all the over the road refer containers and trailers...and that was thousands of units for the over the road equipment as well as the very large units in the shipping vessels as well.  They are a top notch refrigeration equipment outfit.
 
There is a local dealer not far from I-275 only a few miles from me.
Peter & Beth Martin
No Forrest? What have you done?
MC# 15890 until Dec 2016; FMCA #F329677
Cincinnati, OH

Re: Dash A/C

Reply #6 –
I would LOVE to get 51.6° dash air with outside temperature of 86°.  I would say that you have a dash air conditioning unit that works as well as any out there.

Paul 36' 2000 U320
Paul
36' 2000 U320
2014 Jeep Grand Cherokee Summit

Re: Dash A/C

Reply #7 –
Mine will freeze my knees off.

'Course, that's about all it cools...

Quote


Paul Wildenstein wrote:

I would LOVE to get 51.6° dash air with outside temperature of 86°. I would say that you have a dash air conditioning unit that works as well as any out there.

Paul 36? 2000 U320

The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Dash A/C

Reply #8 –
One thing I have been told is that the newer R134A has smaller molecules then the old R12 and therefore leaks easier.  Because of this most automotive A/C systems are mostly hard line and very little hose.  Older hoses such as the ones on my R134A conversion are even more leaky.  In my case there is only very little hard line and mostly hose.  I do no know about the Unihomes but if they are mostly hose then you will have leaks and have to recharge.  I think mine lasted two years before it had leaked down to the point of the compressor not turning on because of the low pressure switch.  My '96 truck finally lost enough freon to stop working this last year so it lasted 13 years.

There is a company here in Houston called Cool Flow that can make up hard lines but I would need access to a pit for several weeks to install them so I'm left with having to recharge more often then I would like.
John Cooper
'91 GV 36'
Oshkosh chassis
Cat 3208T 300HP
 

Re: Dash A/C

Reply #9 –
Dave, the automotive A/C industry considers 25 deg differential to be optimum since you are getting 34 i would say that your doing very well.
Ron In ICT
I.CW.
99 U320-40