Hello:

March of this year, I purchased an E320 Turbo Diesel 1998 model year. It had one owner previously who drove it exclusively in California. It had about 70K miles and was in pretty nice condition with very minor items which I repaired. Since the weather didn't turn very hot, we didn't need the air conditioning on until recently and noticed that the passenger side vents were blowing out hot air. Also depending on the settings, hot air also blows out toward the floor or the windshield when the air conditioning is on.

Is there a simple solution to this? Can I fix this myself?

Also, does anyone know of a good online source for Mercedes parts?

Thank you.

 

is it just the passanger side vents blowin hot air? or all of them? If all of them, try charging the system.

 

The passenger side vents all blow hot air - top, floor, and face. The center and driver side vents blow cool air.

Thanks.

 

duo valve.

check and replace

 

Flush your system and recharge it. Go to a reliable European auto mechanic. If he's worth his salt, he'll be able to tell you if the A/C freon is low... if so, the hoses should be inspected for a leak. I had the same problem and a recharge (with a hose on the "low" side) did the trick. My duovalve was okay but your mechanic should check it out. Best of luck to you! Nice car.

 

before you charge it or clean the duo-valve(no need to replace it in most cases.Diy cleaning on benzworld.org w210 diy section.Run
http://www.eclassbenz.com/node/27 post the 1-8 values and errors. ohlord

 

Hi , i have same problem couple days ago when i bay 2003 E 320 w with 60000 mile on it. The problem is front left side blow out hot and others cold air ...they find leak on one hose and they replace,now is fine.The hoses should be inspected for a leak.

 

I just replaced the ac compressor on my 2000 E320 with one that I had previously taken off a car my wife totaled. The replacement compressor was less than a year old and had been stored properly for 18 months. I also installed a new receiver dryer along with it. After installing the comp and r/d I pulled a vacuum on the system and let it sit for two hours with no bleed down or leaks. I recharged per spec and reset the ac fault codes, the ac worked perfectly with ice cold air for three weeks. Today I jumped in and took off but the ac didn't blow cold, only outside temp air. Yesterday it worked fine.

Here are the numbers:

The EC light is NOT on.
The AC Clutch will not engage.
The Low Pressure reading while running with ac on is 110 psi. (It read 38 psi just after I recharged it.)
The High Pressure reading while running with ac on is 150 psi. (It read around 280 psi when recharged.)
The only fault code is E 1419.

Here are the readings with car running in 84 degree heat:
1 100
2 84
3 107
4 107
5 103
6 181
7 07
8 91
9 30
10 4.5
11 2.8
12 4.2

Does anyone have an idea where to start troubleshooting?