Overheating when Idle.. Awful noise!

  1. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #1
    Hey guys.

    Ever since I've had my BMC CDA fitted, I seem to be overheating when idle. I was in KFC drive through earlier and on the thermostat it was 3/4 full, then this noise started which I thought was the fan but it was quite loud and didnt really sound like a fan? could it be the air filter??

    Help
  2. Saxperience Post Whore Joined: Aug 2008 The wrong carpark Posts: 5152 Xantia 1.9TD
    #2
    Shouldnt have anything to do with the filter. Describe the noise? Chances are you just have a random airlock and the coolant needs bleeding
  3. Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx
    #3
    wot is a BMC CDA ?
  4. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #4
    It sounds like a fan but I dont think it is? But then it must be because it only kicks in when the temp is really hot. Would a service sort this?
  5. Saxperience Addict Joined: Dec 2009 Posts: 11714 A6 Le Mans tuned/A3 TFSI tuned
    #5
    Quote:
    Originally Posted by Railroader View Post
    wot is a BMC CDA ?
    http://lmgtfy.com/?q=BMC+CDA
  6. Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx
    #6
    Take it off then?
  7. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #7
    Yeah it's an air filter.

    Why would I do that? I dont think it is to do with that.
  8. Established Member Joined: Aug 2009 King's lynn Posts: 2073 Turbocharged vtr
    #8
    Get the coolant looked at first, get it drained and bled correctly, then let it idle until the fan kicks in, and check the temperature
  9. Established Member Joined: Dec 2009 Bolton Posts: 1068 Saxo 1.4i sx
    #9
    Quote:
    Originally Posted by taylor93 View Post
    Yeah it's an air filter.

    Why would I do that? I dont think it is to do with that.
    Cos you said "Ever since I've had my BMC CDA fitted"
  10. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #10
    It could just be a coincidence!?

    Duno
  11. Regular Poster Joined: Jun 2009 north devon Posts: 433 210bhp golf gti, red 106 gti
    #11
    shouldnt be to do with the filter... but if u do take it off and want to get rid off it ... im after one of them lol
  12. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #12
    Quote:
    Originally Posted by sexy-silver-saxo View Post
    shouldnt be to do with the filter... but if u do take it off and want to get rid off it ... im after one of them lol
    haha.

    I think it could just be the fan making the noise, ?
  13. Saxperience Post Whore Joined: Oct 2009 Basildon And Corringham, Essex Posts: 5179 MK1 Focus RS, Discovery TD5, Renault Trafic 2.0
    #13
    Bleed your System, overheating like that is normally due to an air lock.
  14. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #14
    It is the fan, I checked earlier it's just the fan making an awful noise.

    Might get it replaced or get 2 added?

    I spoke to my mechanic mate and he said it's because the airbox doesnt get cold air when its idle so it heats up, therefore the fan kicks in... might need to create a new air feed??
  15. Saxperience Post Whore Joined: Aug 2008 The wrong carpark Posts: 5152 Xantia 1.9TD
    #15
    tbh the fan should be kicking in before then. bleed the system

    and the reason the fan comes on is because when you're driving the air cools down the radiator
  16. Established Member Joined: Feb 2009 ★ West / North Yorkshire ★ Posts: 1653
    #16
    Quote:
    Originally Posted by taylor93 View Post
    I spoke to my mechanic mate and he said it's because the airbox doesnt get cold air when its idle so it heats up, therefore the fan kicks in... might need to create a new air feed??
    What? The cooling system is nothing to do with the air feed. The car will heat up when idle because air isnt passing through the radiator, which is cooling the coolant - in this case the fan is turned on automatically and does the blowing for you.

    Sounds like you just need a replacement fan thats all..
  17. Regular Poster Joined: Jun 2010 Milton Keynes Posts: 286 106 Quicksilver [DIED], Posi Furio atm.
    #17
    Oh okay cheers pal