306 DTurbo heating system

Discussion in 'Peugeot 306' started by alex prior via CarKB.com, Apr 11, 2005.

  1. Hi all, I'm sure there must be plenty of people who have experienced
    similar problems with their cars, but I need a little help with my 1995
    DTurbo heater and cooling system.....

    Over the past couple of weeks the heaters have stopped working and only
    cold air is pumped through. There is no A/C fitted in my car. Normally
    this would mean there's no water in the heater matrix, but I have checked
    this and water is pumping through the matrix when the radiator hose (top
    one) is squeezed and the bleed valve is undone.

    The engine never seems to get hot and rarely reaches 90 on the gauge -
    mostly sits about 70 - but the fans are coming on a lot, and are coming on
    super fast - I don't recall ever hearing the uberfan kick in which is what
    it is doing now. Also, when the engine is hot after a drive, you can lay
    your hand directly on the radiator which is stone cold.

    However, I had to do a long run the other day, and I noticed the engine
    starting to get hot when I slowed down after motorway speed and the air
    coming through the heater was on (rare) ocassions very hot before going
    back to cold.

    I think a blockage may be to blame, but why do I get ocassional hot air?

    Can anyone help!!??

    Cheers!
     
    alex prior via CarKB.com, Apr 11, 2005
    #1
  2. alex prior via CarKB.com

    Nom Guest

    Your thermostat is almost certainly stuck open.
    They cost almost nothing - replace it first, and then if you still have
    issues, you can worry about blockages etc.
     
    Nom, Apr 11, 2005
    #2
  3. alex prior via CarKB.com

    Nigel Guest

    I agree. Renew the stat, then check the heater hoses are getting
    hot--both of them. If there is still a problem, suspect a partially
    blocked radiator.
     
    Nigel, Apr 11, 2005
    #3
  4. Thanks for your help guys with this problem, I'll try to swap the
    thermostat at the weekend and see how it goes......

    Cheers!
    Al.
     
    alex prior via CarKB.com, Apr 12, 2005
    #4
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