AC problem with c300
#1
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Mercedes Benz C300 sold , Passat CC 2010 Quad Exhaust sold , Mercedes Benz C63 2009
AC problem with c300
Hey
I have an issue with the air conditioner in my c300 2009
Recently I changed the AC compressor & Radiator , and put gas and everything
first day the AC worked fine , second day it worked for couple of hours then it only hot air comes and couple of hours later it worked normally .
Since 3 days now it stopped working and when i use the AC it only gives me hot air , like I am in Sauna !!!
I took my car to some shops and none of them knew the problem , checked with Xentry and it showed the gas is ok and AC is working ( fooling me :>( )
Any one please had this issue before or have some experience with this
Thanks
I have an issue with the air conditioner in my c300 2009
Recently I changed the AC compressor & Radiator , and put gas and everything
first day the AC worked fine , second day it worked for couple of hours then it only hot air comes and couple of hours later it worked normally .
Since 3 days now it stopped working and when i use the AC it only gives me hot air , like I am in Sauna !!!
I took my car to some shops and none of them knew the problem , checked with Xentry and it showed the gas is ok and AC is working ( fooling me :>( )
Any one please had this issue before or have some experience with this
Thanks
#2
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Hey
I have an issue with the air conditioner in my c300 2009
Recently I changed the AC compressor & Radiator , and put gas and everything
first day the AC worked fine , second day it worked for couple of hours then it only hot air comes and couple of hours later it worked normally .
Since 3 days now it stopped working and when i use the AC it only gives me hot air , like I am in Sauna !!!
I took my car to some shops and none of them knew the problem , checked with Xentry and it showed the gas is ok and AC is working ( fooling me :>( )
Any one please had this issue before or have some experience with this
Thanks
I have an issue with the air conditioner in my c300 2009
Recently I changed the AC compressor & Radiator , and put gas and everything
first day the AC worked fine , second day it worked for couple of hours then it only hot air comes and couple of hours later it worked normally .
Since 3 days now it stopped working and when i use the AC it only gives me hot air , like I am in Sauna !!!
I took my car to some shops and none of them knew the problem , checked with Xentry and it showed the gas is ok and AC is working ( fooling me :>( )
Any one please had this issue before or have some experience with this
Thanks
#3
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the temperature sensor is installed and it's working normally , also i have installed a new sensor as a try to fix it , nothing changed
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Nissan GT-R BE / '12 Ducati-1199 Panigale S / '12 C300-4M Loaded/GLK350-4M Loaded
This is basic AC 101. After you charged it, (I'm assuming you did this correctly by pumping out the system first and also making sure there were no pinhole leaks anywhere) did you:
1) Make sure you charged the system with the correct volume of refrigerant listed under the hood?
2) Separately added the MB recommended type of compressor lubricant? (If pre-mixed, you made sure it was compatible?)
3) You checked to see if your evaporator was freezing up on the second day? (When it worked fine then started to blow hot air?)
Based on these symptoms you either A) Undercharged the system. B) Did everything correctly but failed to check for small leaks. Thus, as the R134a charge leaked out, the system started to slowly fail once again. ( Working Great... then working ok, then blowing hot air (freeze-up then nothing as the charge detector solenoid shuts down the compressor to protect it.)
BOTTOM LINE: You have a bad leak. I wouldn't try stop-leak either. These quick fixes ruin the system, which will then be super expensive. Do a vacuum/partial-charge, only this time add dye to the system. Drive it for a day then use a black light to detect the leak. Replace what's leaking, and recharge the system. It should work flawlessly.
BTW: Make sure the lubricant is MB approved or compatible. Good luck..
1) Make sure you charged the system with the correct volume of refrigerant listed under the hood?
2) Separately added the MB recommended type of compressor lubricant? (If pre-mixed, you made sure it was compatible?)
3) You checked to see if your evaporator was freezing up on the second day? (When it worked fine then started to blow hot air?)
Based on these symptoms you either A) Undercharged the system. B) Did everything correctly but failed to check for small leaks. Thus, as the R134a charge leaked out, the system started to slowly fail once again. ( Working Great... then working ok, then blowing hot air (freeze-up then nothing as the charge detector solenoid shuts down the compressor to protect it.)
BOTTOM LINE: You have a bad leak. I wouldn't try stop-leak either. These quick fixes ruin the system, which will then be super expensive. Do a vacuum/partial-charge, only this time add dye to the system. Drive it for a day then use a black light to detect the leak. Replace what's leaking, and recharge the system. It should work flawlessly.
BTW: Make sure the lubricant is MB approved or compatible. Good luck..
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Thanks for answering my question
I didn't not do the work by my self , a took my car to a shop and they changed the Compressor and the evaporator and added the refrigerant .
and everything is new but as what I think is the problem is I have low or no compressor lubricant . it's just a guess leak issue since I changed all parts i mentioned above
Thanks
but please could you explain what you mean by A) Undercharged the system
because I don't think I have
I didn't not do the work by my self , a took my car to a shop and they changed the Compressor and the evaporator and added the refrigerant .
and everything is new but as what I think is the problem is I have low or no compressor lubricant . it's just a guess leak issue since I changed all parts i mentioned above
Thanks
but please could you explain what you mean by A) Undercharged the system
because I don't think I have
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Nissan GT-R BE / '12 Ducati-1199 Panigale S / '12 C300-4M Loaded/GLK350-4M Loaded
Thanks for answering my question
I didn't not do the work by my self , a took my car to a shop and they changed the Compressor and the evaporator and added the refrigerant .
and everything is new but as what I think is the problem is I have low or no compressor lubricant . it's just a guess leak issue since I changed all parts i mentioned above
Thanks
but please could you explain what you mean by A) Undercharged the system
because I don't think I have
I didn't not do the work by my self , a took my car to a shop and they changed the Compressor and the evaporator and added the refrigerant .
and everything is new but as what I think is the problem is I have low or no compressor lubricant . it's just a guess leak issue since I changed all parts i mentioned above
Thanks
but please could you explain what you mean by A) Undercharged the system
because I don't think I have
However, there are at least 12 or more rubber "O" ring seals throughout the system. Just because some guy replaced the compressor and probably your condenser (and not the evaporator as you claim) doesn't mean the system is leak-free!
You have a small leak, that's my best guess, and until it is found and properly repaired, you will be wasting your time and money, and possibly blowing your new compressor. Get the dye, vacuum-out the system using a good grade pump, (at least 30 min.) charge it again with R134a and the proper lube amount and a small can of Luminance Dye. (They sell R134a with the dye built in.) Run it for a day or so, then use a black-lite (at night) to see where the leak is. It will glow a brite green/blue. Replace the leaking "O" ring(s) or the faulty component, recharge AGAIN and you should be good to go.
Go to Harbor-Freight Tools (there's one near you no doubt and buy the proper tools and do it yourself.) Link: http://www.harborfreight.com/25-cfm-...ump-98076.html
Pump
AC Gauge Set
R134a with Dye and the UV Black-Lite Link: http://www.ebay.com/itm/Leak-Detecti...ht_1952wt_1066
Last edited by MBRedux; 07-01-2012 at 12:22 AM.
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Thank you for the answer
And I will comment as soon as I fix the problem and tell you what happened .
Appreciate your help
Regards
And I will comment as soon as I fix the problem and tell you what happened .
Appreciate your help
Regards