Radiator Fan Slow

Discussion in 'Engine' started by MarcelKan, Apr 27, 2012.

  1. MarcelKan

    MarcelKan Member

    Messages:
    37
    Joined:
    Sep 27, 2011
    Location:
    coventry
    Car:
    C200 Kompressor
    Hi everyone,

    I would like to get some opinions from you about the problem I have had now on my W203 C200K M111 engine as I was stuck on a traffic jam yesterday evening about 45 minutes due to an accident. I have noticed that my engine sound weird and when I looked at the engine temperature on the dashboard its near 100C. I quickly stopped the car at near the road side and opened the hood, found our the radiator fan was spinning rather slow not as it normally should be. I 've called the Inde this morning and they require the car to be left at the garage for a day to diagnose the problem. From other experiences, are there any other related problems or just the fan that need to be changed.:confused: Thank very much.
     
  2. grober

    grober MB Master

    Messages:
    27,858
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    Chances are you will need a new FAN viscous coupling -----other outside possibility is a blown cylinder head gasket.
     
    1 person likes this.
  3. OP
    OP
    MarcelKan

    MarcelKan Member

    Messages:
    37
    Joined:
    Sep 27, 2011
    Location:
    coventry
    Car:
    C200 Kompressor
    I have not yet send the car to the Inde garage at this moment. The car drive as normal..smooth and powerful as usual. Notice the temp today is in between 80c and 100c or perhaps 90C. The fan did kicked in but at slow spin. I am wondering is the fan has a variable rotation speed control depending on temperature or it is near to the end of its life. Thanks.
     
  4. Merc Owner 2B

    Merc Owner 2B MB Enthusiast

    Messages:
    1,009
    Joined:
    Dec 3, 2009
    Location:
    Leicestershire
    Car:
    2012 ML250 Sport BlueTec
    All depends on the type of fan. A pic would be useful as I'm sure there'll be lots of advice available later when they all get away from work.
     
    1 person likes this.
  5. nick mercedes

    nick mercedes MB Enthusiast

    Messages:
    7,107
    Joined:
    Jan 8, 2003
    Location:
    far far away
    Car:
    Ford Expedition
    It's usually the wireing where chaffing on a W203.
     
    1 person likes this.
  6. nick mercedes

    nick mercedes MB Enthusiast

    Messages:
    7,107
    Joined:
    Jan 8, 2003
    Location:
    far far away
    Car:
    Ford Expedition
    W203 - electric fan surely?
     
  7. grober

    grober MB Master

    Messages:
    27,858
    Joined:
    Jun 22, 2003
    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    1 person likes this.
  8. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

    Messages:
    18,892
    Joined:
    Feb 8, 2007
    Location:
    Horndean, Portsmouth, Hampshire, Southsea
    Car:
    C43 AMG with a 55 engine and supercharger, E55 AMG, S500, etc
    I expect the fan control unit on the fan is faulty. A check on a Star will help.
     
    1 person likes this.
  9. OP
    OP
    MarcelKan

    MarcelKan Member

    Messages:
    37
    Joined:
    Sep 27, 2011
    Location:
    coventry
    Car:
    C200 Kompressor
    I'll take some pictures to show the fan. Meanwhile, I had read the Original manual for the car that the coolant temp in normal driving conditions can rise up to 120C specially when driving up the hill. I also found out that the temp. sensor near was set to kick in the fan at 100C and some said that the fan viscous coupling clutch will be fully engaged at 100C and the fan will spin at full speed. Some people says that coolant temp between 80C - 100C is normal for kompressor engine. Which one is applicable...??? As in my case, the coolant temp. has never up to 100C even in 45 minutes traffic jam. Perhaps, the original mercedes manual should be considered.
     
  10. spike60

    spike60 Active Member

    Messages:
    287
    Joined:
    Dec 31, 2011
    Location:
    It's grim oop North!
    Car:
    500 SEC, E320 cdi estate, BMW Z3 2.8, Porsche 944 2.7
    I'd reckon if temp stays below 100c in a traffic jam for 45mins you don't have a cooling problem. My car fan runs slowly after being in traffic, I assumed it was variable.
     
    1 person likes this.
  11. matty.13

    matty.13 Active Member

    Messages:
    458
    Joined:
    Jul 17, 2010
    Location:
    orpington
    Car:
    Bmw ///M coupe . BMW v10 m5
    I have the same thing , when im stuck in traffic for a while the temp goes up to 95ish as but noramally goes back to 90 when i start moving for a while . I would only worry if was over 100 most of the time .
     
    1 person likes this.
  12. OP
    OP
    MarcelKan

    MarcelKan Member

    Messages:
    37
    Joined:
    Sep 27, 2011
    Location:
    coventry
    Car:
    C200 Kompressor
    Thank for your comments. Perhaps, that weird loud sound (like the plane turbo propeller) from the front hood was the fan kicked in at full speed. I also came to know from other forums that the fan operating at variable speeds depending on coolant temperatures detected by the temp. sensor and control by the ECU + fan control unit. Cheers everyone and have a good day.
     
Tags:

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.