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No hot water getting into the heating system? What can it be

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by DJM1982, Dec 6, 2010.

  1. DJM1982
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    DJM1982 Member

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    As above,
    Heating isn't working. The motors have been checked and there is one that needs replacing, but the real problems now seems to be that there is no hot water into the heating system.
    Has anyone got any ideas what this can be?? Help needed fast
    #1
  2. Welly
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    Welly VX220 SC Driver :)

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    Possibly a gummed up heater matrix, or most likely an air lock in the coolant system....
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  3. DJM1982
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    DJM1982 Member

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    how do you cure the air lock then?
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  4. unikarl
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    unikarl Member

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    Bleed the system as you would your central heating at home. Run the car, let the engine get up to temperature and then open up the radiator valve to let free any air pockets.
    #4
  5. RallyX
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    RallyX Flat Out

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    Could also be a faulty thermostat.
    #5
  6. DJM1982
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    DJM1982 Member

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    I think the garage has ordered a new thermostat. Looks likely to be a big bill though.
    #6
  7. AudiSport
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    AudiSport Member

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    Thermostat. Or Head Gasket.
    #7

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