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  1. #1
    griswold's Avatar
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    Heater blowing cold/luke warm

    Hi the heaters on my A6 2.4 are not getting hot
    just luke warm.
    The temp gauge is sat at 90.
    So what should i check first?
    would a flush help? heater core blocked?
    if its the stat would gauge be showing 90?
    if i change the stat might as well do timing belt at the same time
    so cheap fixes first
    asked here as quite a few a4 2.4 about
    A4 1.8T Quattro sport
    A6 2.4 Avant SE



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  3. #2
    Nez
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    Water pump man.
    (Audi S4 351.9 PS, 603 Nm, MRC Custom Remap XS Power DP's, Cat Back Exhaust, Forge DV, RS4 Intercoolers, RS4 Breaks and Induction kit)



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  4. #3
    Fraser's Avatar
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    got the same today on my a4 1.8t sport

    heater blowing ok, but no heat from the heater, very luke warm.

    why would it be the water pump? whats the connection?

    ta

  5. #4
    "Stick a V8 in it!"

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    if it was the pump i'd expect it to overheat?

    Does it have climate?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
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  6. #5
    griswold's Avatar
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    On my 2.4 turned out to be the stat but had new timing belt and water pump done
    but it still not as hot as my 1.8 gets but much better after all the work
    but the temp used to vary but the slower the heater blower the hotter it got
    is yours hotter with the blower on a slow speed?
    A4 1.8T Quattro sport
    A6 2.4 Avant SE



  7. #6
    Fraser's Avatar
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    has climate aircon

    there is a trickle of heat on low fan speed

    just had new thermostat done approx 1500 miles ago. oil and water temps all ok from the gauges

    car is on 158000 now

    cambelt kit was done at 119000 by awesomegti - but can't tell if they replaced the waterpump at that time - remember asking for it but their receipt does not mention it - will call them tomorrow to see.

  8. #7
    Broken Byzan's Avatar
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    I spose back flushing the heater matrix won't hurt .

    Usually with WP failure you find it idles ok temp wise,until you load the engine up and it starts to get too warm

  9. #8
    Fraser's Avatar
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    ok, will give that a go, thanks

    found this how to, looks slightly risky with too much water pressure?

    Heater core backflush w/ pics - AudiWorld Forums

 

 

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