Air Conditioning Fan or Jet Engine Turbine - Mercedes-Benz Forum

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 59 (permalink) Old 05-02-2010, 09:50 PM Thread Starter
BenzWorld Member
 
Date registered: Mar 2010
Vehicle: 2006 E350
Location: CT
Posts: 64
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Air Conditioning Fan or Jet Engine Turbine

Yesterday was pretty warm up this way. The wife and I were heading to an event requiring being somewhat "dressed". I decided to start the car and give the air conditioning some time to pre-cool the car. A couple of minutes later I could hear the fan (inside the engine compartment) running very fast and it was a bit loud. Is this normal? It was really cranking! It slowed down a bit while still idling and the interior cooled down nicely but it did leave an impression, so I thought I might ask the experienced owners if this was typical operation for the AC when the car is idling. The car is an '06 E350.
Thanks,
Mark
Bogey887 is offline  
Sponsored Links
Advertisement
 
post #2 of 59 (permalink) Old 05-03-2010, 01:07 AM
BenzWorld Member
 
Heatwave's Avatar
 
Date registered: Apr 2009
Vehicle: 2007 E350 Sport, 2007 SL550
Posts: 251
Mentioned: 0 Post(s)
Quoted: 20 Post(s)
An idling engine has to produce its own airflow to control engine heat ... there's no airflow that occurs when the car is moving. The electric fans cycle on and off, and speed up and slow down, as necessary to aid the radiator in reducing the temperature of the cooling fluid circulating around the engine and through the radiator. At highway speeds, the fans may not cycle on at all, or perhaps only occasionally (depending on driving conditions) because the airflow is assisting the radiator in its function. Based on what you described, it appears your cooling system probably is working properly.
Heatwave is offline  
post #3 of 59 (permalink) Old 05-03-2010, 03:31 AM
BenzWorld Member
 
Bimbis's Avatar
 
Date registered: Dec 2006
Vehicle: Formerly a 1990 200E; then a 2003 E320; and now a 2010 E350 P1, P2, Wheel pkg & folding rear seats
Location: Lagos, Nigeria
Posts: 100
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
i just loove hearing that sound. like a jet engine! and the way it spools up to max voume/speed and spools down when it's cutting out.
and yes, i do believe the system is working just fine.
Bimbis is offline  
post #4 of 59 (permalink) Old 05-03-2010, 05:50 AM
BenzWorld Member
 
PPBSKIS's Avatar
 
Date registered: Nov 2007
Vehicle: 05 E500 4 Matic
Location: Point Pleasant beach, NJ
Posts: 89
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
I know what you mean and I am half deaf. When my car was being picked up for routine service I asked the driver if this was normal and he said that it was common, I also asked the service writer if this was normal and he indicated that nothing was out of the ordinary. It is a heck of a racket though.
PPBSKIS is offline  
post #5 of 59 (permalink) Old 05-03-2010, 07:06 AM
BenzWorld Elite
 
eric242340's Avatar
 
Date registered: May 2007
Vehicle: Zotye Auto 1.5T T600 2016
Location: The wild west of the Far East
Posts: 51,967
Mentioned: 3 Post(s)
Quoted: 281 Post(s)
It is normal, buy an S Class 600 and drive it in the sub tropics and boy you will know what a real jet engine sounds like, they cook so easy

ERIC.

___________________________________________
"I am enclosing two tickets to the first night of my new play; bring a friend, if you have one."
- George Bernard Shaw to Winston Churchill.

"Cannot possibly attend first night, will attend second ... if there is one."
- Winston Churchill, in response.
eric242340 is offline  
post #6 of 59 (permalink) Old 05-03-2010, 07:48 AM Thread Starter
BenzWorld Member
 
Date registered: Mar 2010
Vehicle: 2006 E350
Location: CT
Posts: 64
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Guys,
Thanks for the response. I thought that was how it was supposed to work but boy that puppy cranks!!!
Thanks,
Mark
Bogey887 is offline  
post #7 of 59 (permalink) Old 08-04-2010, 02:02 PM
BenzWorld Member
 
Date registered: Jan 2010
Posts: 61
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Post

i have 03' e320 - w211 the fan (in the engine compartment) is constantly running at high speed, also it started yesterday after we got home from our trip. during our trip on the way home the ac was not functioning properly, the interior ac fan speed worked great, but the air was blowing cool, not ice cold as normal. when i got home i checked under the hood and noticed the ac lines were covered in ice. left the hood open so the ice would melted faster. it took a few minutes for the ice to melt ( live in florida ) and the ac began to blow cold air again but now the fan in the engine compartment is running at a high speed, constantly and will not slow down or stop. this has never happened before.

i can go out and start the car and within about 30 seconds, the engine fan kicks in on high and constantly runs. any ideas? thanks in advance for your response.
domingo56 is offline  
post #8 of 59 (permalink) Old 08-04-2010, 09:06 PM
BenzWorld Member
 
PPBSKIS's Avatar
 
Date registered: Nov 2007
Vehicle: 05 E500 4 Matic
Location: Point Pleasant beach, NJ
Posts: 89
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
My experience with ice on the line sets would be low refrigerant levels, at least in a home A/C system.
PPBSKIS is offline  
post #9 of 59 (permalink) Old 07-13-2013, 01:15 PM
BenzWorld Newbie
 
jason5610's Avatar
 
Date registered: Apr 2013
Vehicle: 05 E500 4Matic
Location: VA
Posts: 2
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
If the AC is working properly why the noise? Any way to get the fan to not be as loud or should I just replace the fan? Any options here to resolve the loud sound?
jason5610 is offline  
post #10 of 59 (permalink) Old 07-13-2013, 01:44 PM
Moderator
 
Date registered: Jul 2005
Vehicle: 90 300E, 99 ML430, 00 ML320, 05 E500 4matic Wagon
Location: WI
Posts: 18,557
Mentioned: 18 Post(s)
Quoted: 822 Post(s)
Lifetime Premium Member
It slows down and makes less noise once the car is under way or it has been on for up to 10-15 minutes.
You do not want a slower fan on hot days. The AC and engine cooling need the airflow.
Noodles is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W211 E-Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
     
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode


    Forum Jump

    Similar Threads
    Topic Author Forum Replies Last Post
    Air conditioning not blowing cold air cooling fan not working vrod1495 R170 SLK-Class 0 11-02-2009 07:37 PM
    Fan sounds like jet engine '04 CLK 500 pcohen15 C209/A209 CLK-Class 9 09-11-2007 02:19 PM
    Air conditioning blower fan motor noise jruano R129 SL-Class 1 06-02-2005 08:14 PM
    air conditioning fan not working! Selma W201 190-Class 3 04-23-2005 07:48 PM
    190E Air Conditioning & Cooling Fan Operation scripley W201 190-Class 0 03-03-2004 01:08 AM

    Posting Rules  
    You may post new threads
    You may post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are On
    Pingbacks are On
    Refbacks are On

     

    Title goes here

    close
    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome