AC Problems
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
I checked mine as well. NO flow out of the center vents when on heat. Hard to believe we all have faulty vacuum lines simultaneously in different parts of the US.
Also, a search for 'center vent' on other sites shows feedback from mods, etc. that no flow is the normal condition.
chamnya - have you tried redirecting the 'flow' from the side vents toward the center of the car with the vent controls? that should help some.
Also, a search for 'center vent' on other sites shows feedback from mods, etc. that no flow is the normal condition.
chamnya - have you tried redirecting the 'flow' from the side vents toward the center of the car with the vent controls? that should help some.
Last edited by RichardM98; Dec 14, 2008 at 10:57 AM.
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
Cute. But seriously you're the expert why is your car different than the rest of us. Perhaps these 'valve doors' have a return spring to close them when the vacuum is cut. If so and yours had a broken spring that would explain why you get hot air. Unless of course it's just bouncing off the dash.
Newbie
Joined: Jan 2008
Posts: 22
Likes: 1
Mercedes-Benz E320 Aventgarde year 2000, Diesel
As far as I know, it is by design. The center air outlets are only used for cool air.
If you look at the picture, it does show that only cool air comes out of the center outlets.
Granted, the last description in the text, does not coolate with that.
If you look at the picture, it does show that only cool air comes out of the center outlets.
Granted, the last description in the text, does not coolate with that.
Member
Joined: Jan 2006
Posts: 178
Likes: 4
From: Austin, TX
2012 C250
The common thread seems to be that hot air comes out the side vents, and cold air comes out the center. I think the explanation for warm and cool air coming from all the vents is probably something to do with the way air is blending to get the right temperature coming from the climate control system. For those of you who are getting warm air from your center vents, what happens as you increase the temperature? as it goes into higher ranges do you get more and more air coming from the sides?
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Senior Member
Joined: Apr 2006
Posts: 463
Likes: 8
From: Long Island, NY
01 E320
Why should we expect logical and consistant operation when our cars have the most over-engineered and counter-intuitive climate control systems ever made. Missile guidance systems are less complicated.
I love my car but the old fashioned 3 knob system from my Jeep would be an improvement. Press the Econ button to turn off the AC, the defrost button to roast you with 100 degree air,resid button to give heat when the engine is off. Ever try to explain this stuff to the non-Mercedes driver that periodically shows up your driver seat? Don't even get me started about Rain Sensing Wipers but no Auto Headlights, or the complicated (and troublesome) passenger seat occupancy sensor systems designed specifically for an infant seat that nobody in there right mind would ever use.
I love my car but the old fashioned 3 knob system from my Jeep would be an improvement. Press the Econ button to turn off the AC, the defrost button to roast you with 100 degree air,resid button to give heat when the engine is off. Ever try to explain this stuff to the non-Mercedes driver that periodically shows up your driver seat? Don't even get me started about Rain Sensing Wipers but no Auto Headlights, or the complicated (and troublesome) passenger seat occupancy sensor systems designed specifically for an infant seat that nobody in there right mind would ever use.
Member
Joined: Feb 2009
Posts: 111
Likes: 0
98 e320
Sinced this thread was started about an AC issue with a W210, I'm going to bravely post an AC issue I'm having with my other benz, 96 C280. I posted this on benzworld but I didn't get a single reply. I know, this forum is for W210 and I apologize, it won't happen again.
###
I have been having issues with my AC for a while. At first, it was a leak and the mechanic replaced the pressure switch, temp switch, receiver dryer, and the condenser. It worked like a charm for a month. Now it takes about 30 minutes for the AC to kick in, when it does, it blows nice cold air; I checked the freon and it appears its holding.
Here are my fault codes:
1 76
2 71
3 84
5 73
6 132
7 CL0
8 71
What does CLO mean?
###
I have been having issues with my AC for a while. At first, it was a leak and the mechanic replaced the pressure switch, temp switch, receiver dryer, and the condenser. It worked like a charm for a month. Now it takes about 30 minutes for the AC to kick in, when it does, it blows nice cold air; I checked the freon and it appears its holding.
Here are my fault codes:
1 76
2 71
3 84
5 73
6 132
7 CL0
8 71
What does CLO mean?
Thread Starter
Senior Member
Joined: Jun 2007
Posts: 382
Likes: 2
From: Norway
2001 E220T CDI Avantgarde, 2002 E55T AMG
Senior Member
Joined: Jan 2007
Posts: 484
Likes: 0
From: Südflorida
'99 E430, '05 ML500, '15 GLK350
I'll go out on a limb and suggest "low", but I don't knwo for sure. My readings are similar right now, except sensor 7 is just "0". My AC clutch doesn't engage, so my first assumption is that the refrigerant is low due to a leak. I can verify that the sensor isn't broken by hooking up a gage to the low-side fill valve
Thread Starter
Senior Member
Joined: Jun 2007
Posts: 382
Likes: 2
From: Norway
2001 E220T CDI Avantgarde, 2002 E55T AMG
Member
Joined: Feb 2009
Posts: 111
Likes: 0
98 e320
I'll go out on a limb and suggest "low", but I don't knwo for sure. My readings are similar right now, except sensor 7 is just "0". My AC clutch doesn't engage, so my first assumption is that the refrigerant is low due to a leak. I can verify that the sensor isn't broken by hooking up a gage to the low-side fill valve
Junior Member
Joined: Mar 2009
Posts: 37
Likes: 0
From: SME- South-America
W210/W202/W164
another A/C problem
Perhaps it is the evaporator sensor, if the value is not good ,you get interference such as , airconditioning compressor will not start or start (own life) , blowing only warm air etc.
MBWorld Fanatic!
Joined: Apr 2007
Posts: 6,171
Likes: 16
300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
SEE
the some tips thread just posted.Run the tests,just as stated.Clear the errors,drive for a day and run the tests again.See what errors come back and also write down the values 1-8 and post them.
Newbie
Joined: Apr 2008
Posts: 2
Likes: 0
e200 Kompressor
AC Temperature control not working
Hello,
I have a manual a/c temperature control (dial type) that does not seem to work. The compressor keeps running no matter how I try to raise the temperature. The cabin becomes freezing cold after 30 mins and the only way to stop it is to press the ECO button. I brought it into a workshop and the technician just said that the controls are faulty. Another workshop said that i just need to replace a sensor. Can someone please help me narrow down the fault?
I have a manual a/c temperature control (dial type) that does not seem to work. The compressor keeps running no matter how I try to raise the temperature. The cabin becomes freezing cold after 30 mins and the only way to stop it is to press the ECO button. I brought it into a workshop and the technician just said that the controls are faulty. Another workshop said that i just need to replace a sensor. Can someone please help me narrow down the fault?
Super Member
Joined: Jun 2006
Posts: 525
Likes: 0
From: the Netherlands
'01 W210 E320 CDI
I have the manual A/C also, you must keep in mind that it does not work like a climate control. So you need to have the EC button lit when it's not very warm/sunny weather otherwise the compressor is always engaged!
It may be the duovalve is stuck, not letting any (hot) coolant fluid through. The duovalve is located in the right rear part of the engine bay in front of the black box containing the ECU's. Try gently tapping the valve with a resin hammer or the handle of a large screwdriver and such.
It may be the duovalve is stuck, not letting any (hot) coolant fluid through. The duovalve is located in the right rear part of the engine bay in front of the black box containing the ECU's. Try gently tapping the valve with a resin hammer or the handle of a large screwdriver and such.
Last edited by Lancelot; Apr 20, 2009 at 03:51 PM.
Senior Member
Joined: Jan 2002
Posts: 295
Likes: 4
From: Long island, NY
2012 E350 4matic/97 e320 and 01 ml320
No A/C
EC light is not on
Car does not blow any cold air
Here are the readings;
1 - 31
2 - 25
3 - 35
4 - 35
5 - 34
6 - 49
7 - 07
8 - 30
Here are the error codes I get;
Eb1 - 419, 226, 227, 228, 229, 230, 232, 233,234, 416,419, 459, 422, 423
Any help will be much appreciated
Thanks,
Rock
Car does not blow any cold air
Here are the readings;
1 - 31
2 - 25
3 - 35
4 - 35
5 - 34
6 - 49
7 - 07
8 - 30
Here are the error codes I get;
Eb1 - 419, 226, 227, 228, 229, 230, 232, 233,234, 416,419, 459, 422, 423
Any help will be much appreciated
Thanks,
Rock
Super Member
Joined: Jun 2008
Posts: 835
Likes: 2
From: Bay Area, CA
09' E320
I'd suggest clearing all the codes (use both auto buttons while on the error screen to erase; FF= No codes) and then drive it a bit before checking which codes came back.
If the evap temp sensor comes back, replace it.
If the evap temp sensor comes back, replace it.
