a/c not blowing cold
Junior Member
Joined: Jul 2003
Posts: 73
Likes: 1
From: Oakville
C220
Originally posted by ahopeter
what the hell!?! i said freon and cil...something said i was wrong. huh!?! i guess thats what i get for believing a noob.
what the hell!?! i said freon and cil...something said i was wrong. huh!?! i guess thats what i get for believing a noob.
https://mbworld.org/forums/showthrea...threadid=66901
MBWorld Fanatic!
Joined: Jun 2003
Posts: 4,705
Likes: 2
From: nj
a car that can't do the throttle reset.
Originally posted by cil254
I was reffering to this post
https://mbworld.org/forums/showthrea...threadid=66901
I was reffering to this post
https://mbworld.org/forums/showthrea...threadid=66901
MBWorld Fanatic!
Joined: Oct 2002
Posts: 1,681
Likes: 1
From: Birmingham, Alabama
2008 SLK-280
I'd love to take a picture and help you but unfortunately Evosportworld won't let us post pictures anymore. I'll be on AIM most of the day so if you see me on there I'll explain it to you then.
Member
Joined: Mar 2009
Posts: 96
Likes: 0
2000 c230 Kompressor
since I recharged my system with a leak kit, it's been great! I assume I would have seen a leak by now (knock on wood that I won't). The pressure has remained fairly constant. Keep in mind that when you measure the pressure, it will vary depending on the temperature surrounding the port and also if the engine and compressor were just running. When a gas gets compressed enough, it becomes liquid. If that liquid warms up, it goes back to gas (which takes up more space) and the pressure will show an increased reading. Likewise, as the gas gets re-compressed, the pressure reading will be lower. I know this seems kind of counter-intuitive, but if I remember my chemistry, then this is how it goes.
Junior Member
Joined: Sep 2011
Posts: 51
Likes: 0
From: Winchester VA, USA
wdbjf55fxtj020203
Help. Help, Help..this is the srangest problem, ONE SIDE IS BLOWING ICE COLD the other side is warm,,, the driver side staying warm no matter what the setting is,,.Not sure where to start,, any idea? hints? etc,, OHLORD, wher are you?
Help
not
Help
not
Newbie
Joined: Jul 2012
Posts: 1
Likes: 0
2004 CLK 320
04 CLK 320
The issue i'm having is when running the AC, it is super cold on the right side vents and almost warm on the left side. I've tried adjusting vents, reset the system but it continues to do this. Any ideas ?
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Member
Joined: Apr 2011
Posts: 130
Likes: 53
From: NC
'15 GLK350, '05 CL65 AMG, '04 C320 4matic
Warm on one side while cold on the other side may be a stuck duo-valve. I just fixed this problem on my daughter's 96 C220 by cleaning the solenoid plungers in the duo-valve. They had crud built up on them causing the one that controls the passenger side heat to stick open. It was only about a 20-minute job.
Member
Joined: Apr 2011
Posts: 130
Likes: 53
From: NC
'15 GLK350, '05 CL65 AMG, '04 C320 4matic
Newbie
Joined: Oct 2014
Posts: 1
Likes: 0
2004 C230 Kompressor
Hello everyone,
I know this post is old, but i'm having issues with the ac system on my 2004 C230 Kompressor.
It all started when i changed the alternator and idler pulley last month, due to the nose coming from the engine. After the change, the noise disappeared and my ac worked just fine after the change. However the next day was different, because when i turned on the car in the morning the ac started blowing hot air.
After about 5 days, the ac started blowing cold again for about 2hrs before shutting off. Sequentially the ac system seems to blow cold air about once a week. This sucks because driving without an ac system can be very uncomfortable.
I'm no expert but i did an electrical bypass to the compressor and got it blowing cold again. This made me realise that the problem was electrical and not with the Freon level. I did a test on the wire supplying current to the compressor with a light bulb; the bulb lit when i turned on the ac but the brightness was low compared to when tested against other electrical components on the car. I did a 2nd test 10mins after with the same procedure and noticed that there was no current supply this time. This low voltage seems to come off and on from time to time.
I have been so confused that i had to return the old alternator back to the car. Regardless of that, i'm still experiencing the same problems.
My fuse box has no diagram, so i don't know where or how to locate the ac fuse or relay to proceed with further diagnosis.
Is there anyone with knowledge on what could be the possible cause and solution to this issue?
I know this post is old, but i'm having issues with the ac system on my 2004 C230 Kompressor.
It all started when i changed the alternator and idler pulley last month, due to the nose coming from the engine. After the change, the noise disappeared and my ac worked just fine after the change. However the next day was different, because when i turned on the car in the morning the ac started blowing hot air.
After about 5 days, the ac started blowing cold again for about 2hrs before shutting off. Sequentially the ac system seems to blow cold air about once a week. This sucks because driving without an ac system can be very uncomfortable.
I'm no expert but i did an electrical bypass to the compressor and got it blowing cold again. This made me realise that the problem was electrical and not with the Freon level. I did a test on the wire supplying current to the compressor with a light bulb; the bulb lit when i turned on the ac but the brightness was low compared to when tested against other electrical components on the car. I did a 2nd test 10mins after with the same procedure and noticed that there was no current supply this time. This low voltage seems to come off and on from time to time.
I have been so confused that i had to return the old alternator back to the car. Regardless of that, i'm still experiencing the same problems.
My fuse box has no diagram, so i don't know where or how to locate the ac fuse or relay to proceed with further diagnosis.
Is there anyone with knowledge on what could be the possible cause and solution to this issue?
Newbie
Joined: Jan 2021
Posts: 1
Likes: 0
C 280
Help
I am looking at a 1998C 280 with an AC that has been refilled all summer. Currently the ac does not work. It also does not have a working radio. Should I run from this car or is it likely to be a fairly inexpensive fix?
Junior Member
Joined: Feb 2020
Posts: 47
Likes: 4
C230
Not sure if this will help anyone, but hopefully it will give clues to investigate further or confirm.
My C230 2000 has not had AC for years. I had 3 mechanics (2 of them serious, specialized in Mercedes). They used the "freon" with the special colorant to find leakage or seal leakage.. They were not successful in fixing the AC. I've heard on my car, there is about 30 points of possible leakage btw...
So every summer I'd run out of cold air and recharge again. Eventually, I stopped doin' it because I realized I don't need AC and gave up on the idea of fixing the AC... until recently when a mechanic told me to check the compressor.
My C230 2000 has not had AC for years. I had 3 mechanics (2 of them serious, specialized in Mercedes). They used the "freon" with the special colorant to find leakage or seal leakage.. They were not successful in fixing the AC. I've heard on my car, there is about 30 points of possible leakage btw...
So every summer I'd run out of cold air and recharge again. Eventually, I stopped doin' it because I realized I don't need AC and gave up on the idea of fixing the AC... until recently when a mechanic told me to check the compressor.
Newbie
Joined: May 2022
Posts: 2
Likes: 0
E 320
Hello everyone,
I know this post is old, but i'm having issues with the ac system on my 2004 C230 Kompressor.
It all started when i changed the alternator and idler pulley last month, due to the nose coming from the engine. After the change, the noise disappeared and my ac worked just fine after the change. However the next day was different, because when i turned on the car in the morning the ac started blowing hot air.
After about 5 days, the ac started blowing cold again for about 2hrs before shutting off. Sequentially the ac system seems to blow cold air about once a week. This sucks because driving without an ac system can be very uncomfortable.
I'm no expert but i did an electrical bypass to the compressor and got it blowing cold again. This made me realise that the problem was electrical and not with the Freon level. I did a test on the wire supplying current to the compressor with a light bulb; the bulb lit when i turned on the ac but the brightness was low compared to when tested against other electrical components on the car. I did a 2nd test 10mins after with the same procedure and noticed that there was no current supply this time. This low voltage seems to come off and on from time to time.
I have been so confused that i had to return the old alternator back to the car. Regardless of that, i'm still experiencing the same problems.
My fuse box has no diagram, so i don't know where or how to locate the ac fuse or relay to proceed with further diagnosis.
Is there anyone with knowledge on what could be the possible cause and solution to this issue?
I know this post is old, but i'm having issues with the ac system on my 2004 C230 Kompressor.
It all started when i changed the alternator and idler pulley last month, due to the nose coming from the engine. After the change, the noise disappeared and my ac worked just fine after the change. However the next day was different, because when i turned on the car in the morning the ac started blowing hot air.
After about 5 days, the ac started blowing cold again for about 2hrs before shutting off. Sequentially the ac system seems to blow cold air about once a week. This sucks because driving without an ac system can be very uncomfortable.
I'm no expert but i did an electrical bypass to the compressor and got it blowing cold again. This made me realise that the problem was electrical and not with the Freon level. I did a test on the wire supplying current to the compressor with a light bulb; the bulb lit when i turned on the ac but the brightness was low compared to when tested against other electrical components on the car. I did a 2nd test 10mins after with the same procedure and noticed that there was no current supply this time. This low voltage seems to come off and on from time to time.
I have been so confused that i had to return the old alternator back to the car. Regardless of that, i'm still experiencing the same problems.
My fuse box has no diagram, so i don't know where or how to locate the ac fuse or relay to proceed with further diagnosis.
Is there anyone with knowledge on what could be the possible cause and solution to this issue?
Last edited by Sro; May 26, 2022 at 08:09 PM.
Newbie
Joined: Aug 2016
Posts: 4
Likes: 0
99 c280
Hi everyone,
I'm having an issue on my 99 c280 where my AC compressor isn't engaging. Everything worked last summer, but over the winter I had to replace my blower motor. After looking through some threads on the subject I ran the CC fault code diagnostics and sensor diagnostics. I didn't have any current fault codes but my sensor values are as followed:
1 Inside Air Temp - 101F
2 Outside Air Temp - 85°F
3 Heater Core Temp - 88°F
5 Evaporator Temp - 121 (this seems unusual?)
6 Engine Coolant Temp - 176
7 Refrigerant Pressure (Bar.) - 1°2 (this also is low)
8 Refrigerant Temp - 78°F
9 (this says not used but still gave a reading?) - 50°F
I'm guessing this has to do with my evap sensor because that value seems very high. I realize the refrigerant pressure is low but how am I supposed to add refrigerant without the AC clutch activating? Any help would be greatly appreciated because I don't know anything about AC and a little out of my element here.
I'm having an issue on my 99 c280 where my AC compressor isn't engaging. Everything worked last summer, but over the winter I had to replace my blower motor. After looking through some threads on the subject I ran the CC fault code diagnostics and sensor diagnostics. I didn't have any current fault codes but my sensor values are as followed:
1 Inside Air Temp - 101F
2 Outside Air Temp - 85°F
3 Heater Core Temp - 88°F
5 Evaporator Temp - 121 (this seems unusual?)
6 Engine Coolant Temp - 176
7 Refrigerant Pressure (Bar.) - 1°2 (this also is low)
8 Refrigerant Temp - 78°F
9 (this says not used but still gave a reading?) - 50°F
I'm guessing this has to do with my evap sensor because that value seems very high. I realize the refrigerant pressure is low but how am I supposed to add refrigerant without the AC clutch activating? Any help would be greatly appreciated because I don't know anything about AC and a little out of my element here.
