2000 Astra - Aircon and hot air failure

Discussion in 'Astra' started by Jason Mann, Sep 8, 2006.

  1. Jason Mann

    Jason Mann Guest

    Hi folks.

    I've got a 2000/X Astra 1.7 DTi. This morning, I discovered that both the
    hot air system and air con heating have both stopped working.

    With the temperature selector set to maximum, but with the aircon unit off,
    I get no warm air coming through my vents, only air at the outside
    temperature. If I switch aircon on, I get chilled air coming through, where
    it used to give me heated air.

    My first thought was that a fuse had blown, but the fusebox diagram in my
    owners manual does not correspond to the actual layout. So I called a
    Vauxhall garage and asked for a correct fuse listing, but the engineer
    pointed out that it was unlikely to be a fuse as the hot air and air con
    systems are independant.

    My drive to work is about 17 miles and the engine is up to normal
    temperature within the first 5 miles.

    I still intend to check the fuses, but can anyone suggest other possible
    causes for this total heating failure?

    Can anyone also confirm that my understanding of the heating system - that
    there are seperate hot air and air con systems, both capable of heating the
    car - is correct?

    Jason Mann, Sep 8, 2006
  2. Jason Mann

    bongo rule Guest

    on my 2002 ASTRA there are 2 rads one in front of the other.
    the front one is for the aircon and the rear one is for the cooling.

    have you checked the water level in the cooling system.
    do you have an air block in the heater.
    is the heater fan working.
    bongo rule, Sep 8, 2006
  3. Jason Mann

    Jason Mann Guest

    Coolant water level - not checked yet, but will do so as the vauxhall
    engineer suggested this too.
    Air block in the heater - don't think so... air flows out of the vents fine
    Heater fan working - yes
    Jason Mann, Sep 8, 2006
  4. Jason Mann

    Jason Mann Guest

    No engine coolant left. Doh!

    Refilled it and the heating has come back.

    I guess I'm lucky I found out that way instead of having my engine overheat.

    Jason Mann, Sep 8, 2006
  5. Jason Mann

    ChrisM Guest

    You might want to worry a bit about where all your engine coolant went...
    When I 'ran out' of coolant on my old Astra, turned out I had a bust
    Might want to have a look at your oil and see if it's got any white gunk in
    ChrisM, Sep 8, 2006
  6. Jason Mann

    rp Guest

    Did you fill it with the proper coolant mix or just water? The coolant
    also prevents corrosion and protects the rubber pipes and things.

    As Chris says I'd be worrying about where the coolant went.
    rp, Sep 8, 2006
  7. Jason Mann

    Jason Mann Guest

    I popped down to the local tyre centre for an "emergency" refill, thinking
    they'd put a proper water/additive mix in, but the guy there just added
    water to the reservoir from a kettle.

    I questioned whether it should have some kind of additive, and he said that
    it's not necessary during the warmer months. I was somewhat sceptical about
    this, but there was an immediate need for water in the engine so I just
    accepted it.

    I have noticed that there is a damp spot on the ground under the radiator
    after the car has been parked for a while, so there may well be a leak.

    I'll take it to a proper garage and get them to drain it down and refill it
    with a proper mix, and ask them to check for a leak too.


    Jason Mann, Sep 11, 2006
  8. Jason Mann

    mikeFNB Guest

    i doubt very much water 'from a kettle' would be of sufficient volume to
    upset the 'mixture' you have in your water system.

    the leak has nothing to do with that at all and the machanic is right, plain
    water will do ok, even in winter! but not too much .

    there is another side to thios coin too.
    if you have a leak, then your 'mixture' is running out & even if you did put
    more of it in, it would still be weak & cost more than water!

    get the leak look at, though sticking your head in or under the care
    yourself doesnt harm you.

    feel around the in/out pies of the rad or where you think it is coming
    it should be obvious by the staining , might just be a hose pipe click loose
    or WHY>

    mikeFNB, Sep 11, 2006
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