no dashboard a/c

[overthemtn]

have a 2005dsdp we have no a/c had it checked out by two places the freon is gone and no one can find a leak even with the black light so now what do we do?

second problem us too had a problem with the paint checking.

this coach sure has cost allot in repairs its our first and last one

[Perry White]

You find the leak with an electronic leak detector. Black lite is a joke. It's not legal to re-charge without fixing the leak. Good shop should have no problem. If that's the only problems you have, your lucky. Was the paint checking when you bought it?

["007"]

Welcome to the Newmar forum overthemtn.
Problems are in any coach brand, be thankful this is your first and last.
Once you get by first couple of years you may be happy.
Try to enjoy, many safe miles for you and welcome to Newmar family.

[overthemtn]

Quote:

Originally Posted by Perry White You find the leak with an electronic leak detector. Black lite is a joke. It's not legal to re-charge without fixing the leak. Good shop should have no problem. If that's the only problems you have, your lucky. Was the paint checking when you bought it?

bought the coach brand new and no the paint was not checking until it went out of warranty
as for the a/c all the freon is gone and hubby took it two two places and the one place kept it for 4 days and i am not sure how he checked it but could not find any leak he said it must be very small. another place checked all the connections and they were fine well the freon is going some where! and its not on the pavement

[overthemtn]

Quote:

Originally Posted by "007" Welcome to the Newmar forum overthemtn. Problems are in any coach brand, be thankful this is your first and last. Once you get by first couple of years you may be happy. Try to enjoy, many safe miles for you and welcome to Newmar family.

but we bought it new in 2005 and now its 2011 havent had one trip with out a problem this is more than a couple of years

[bluepill]

You can buy cheap recharge kits at WalMart, etc.

If there is still some pressure in the system (over 10 PSI), you can just add refergerant until the system pressure is normal.
Then just run it and see how long it takes until the cooling decreases. If it's a very slow leak, you may be able to get a full season on a recharge. Ought to cost you about $40 for a 36 ounce recharge.

DO NOT BUY ANYTHING WITH A SEALER IN IT! Just use plain refergerant.

IF THE SYSTEM HAS GONE DOWN TO ZERO PRESSURE, you will have to have the system evacuated before recharging.

[HeapBigEngin]

Freon was replaced by 134A in automotive/truck AC systems quite a few years ago due to Federal legislation (Ozone damage). Unless a major component has gone away, AC leaks develop most often at the "O" rings that seal many of the system's components and connections. Over time, these "O" rings can dry out/leak if the system is not used frequently....pretty common on RV vehicles that are stored for extended periods. (Most vehicle manufacturers recommend cycling an AC system from time-to-time because of this.) Connections may appear "fine"....but maybe the "O" rings inside are not. Since 134A contains a small amount of lubricant, recharging an AC system should re-lubricate the "O" rings, sometimes allowing them to re-seal....but not always. If they don't re-seal, they must be replaced. By the way, the system must be "evacuated" first and then recharged to properly check for leaks. If the word "evacuate" is not in your shop's vocabulary....find a new shop! A properly-used AC leak detector in the hands of a qualified tech (with the system fully charged) will easily find a leak....even a pin-hole sized one somewhere.

Because 134A, like Freon, has the additive that helps lubricate an AC system's internals (including those "O" rings) you can sometimes find a trace of this lubricant at the leak, but usually not. Since an AC system operates at extremely high pressures, the 134A disipates rapidly into the atmosphere....and you wil almost never find it or the lubricant on the pavement! Also, remember that the 134A must travel all the way from the engine area's AC components up to the front of the coach where there are numerous other AC componts/conections. Lot's of places where 134A can be lost....

A GOOD AC shop that REGULARLY services RV systems will have no problem finding the leak....probably an "O" ring or 2/3/4. Hopefully not a major part. Freightliner and Cummins dealerships that service RV's will likely find the problem quickly. Not always the cheapest games in town, but ya' gets what you pays for. Especially when its 95+ outside! Right?? Please let us know what you find out....Thanks.

[overthemtn]

Quote:

Originally Posted by Perry White You find the leak with an electronic leak detector. Black lite is a joke. It's not legal to re-charge without fixing the leak. Good shop should have no problem. If that's the only problems you have, your lucky. Was the paint checking when you bought it?

the place that my husband took the coach had a electronic leak detector and a ultra violet light which he said was better sorry i said black light that was wrong still could not find it after being their twice.

[1ciderdog]

Perhaps if you give your general location one of the members may be able to recommend a real good service shop. Good Luck
Bob

[ktm500mx]

i just redid mine in the 97 dutchstar one of the o-rings was leaking at the dryer and the clutch was noisy. the electronic leak detctors work great
my brother who is a certified heating and ac guy helped me find the leak and fix the problem. many times with coaches it is the lack of use that causes the problems.
goodluck mike

[justimagination]

........Welcome to IRV2, you have come to the right place to share your troubles. Complicated leaks are often hard to find. Last place that most people overlook is the Evaporator, which is located inside the closed section of the duct work. A charge is necessary and the leak detector must be placed in the a/c outlets of the dash area to properly SNIFF/SENSE the freon leak. Trust me, been there and had to replace the Evaporator in one of my toad's, which is not an easy job but will fix the problem if detected through the outlets. JMHO, good luck and travel safe. Enjoy your coach, they all have problems, your not alone.
David G.

[Idaowl]

Welcome to the best little info site on the web. Last year we had freon loss on our dash air. The shop we took it to was sure we needed to replace the compressor output line because there was dirt on the elbow that was caused by lubricant leakage. They refilled it with 134a and dye to diagnose the leak. Three weeks later no gas and no dye visible. Since winter was coming we put off fixing the thing. Wintered in Quartzsite and took it to a garage there. Same thing, fill and dye, but we had the schrader valves tightened. ( the places where they attach their gauges ) its worked fine ever since. Now if I can get the heat valve to regulate I would be perfect.

[overthemtn]

Quote:

Originally Posted by ktm500mx i just redid mine in the 97 dutchstar one of the o-rings was leaking at the dryer and the clutch was noisy. the electronic leak detctors work great my brother who is a certified heating and ac guy helped me find the leak and fix the problem. many times with coaches it is the lack of use that causes the problems. goodluck mike

thanks for the info we used the dye 3 different times and no leaks but all the freon is gone also the compressor had one too many spacers in it it would not work so a friend removed one and now it does another defect in our coach from the factory

[overthemtn]

Quote:

Originally Posted by justimagination ........Welcome to IRV2, you have come to the right place to share your troubles. Complicated leaks are often hard to find. Last place that most people overlook is the Evaporator, which is located inside the closed section of the duct work. A charge is necessary and the leak detector must be placed in the a/c outlets of the dash area to properly SNIFF/SENSE the freon leak. Trust me, been there and had to replace the Evaporator in one of my toad's, which is not an easy job but will fix the problem if detected through the outlets. JMHO, good luck and travel safe. Enjoy your coach, they all have problems, your not alone. David G.

thanks will check that also