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Thread: heat loss

  1. #1
    bez101's Avatar
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    heat loss

    2005 B7 tdi
    temp at 90 checked in vcds all ok
    no fault codes
    very little heat through vents all flaps ok etc
    gets upto temp as normal not slow
    any ideas ?
    TIA

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  3. #2
    Wrath's Avatar
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    Yep, your heater core is either full of crap or on it's way out. I had the same problem but couldn't get both tubes off the heater core so ended up flushing the whole coolant system and refilling. It worked. Refilled with Audi G12++ bottles from ebay.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

  4. #3
    bez101's Avatar
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    hmm when its up at full temp and hear turned on i get normal hot air
    withing a few mins its going cold again
    so turn it off for 5 mins back on and same thing heat then cold
    ****in thing

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    Wrath's Avatar
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    That's what I had. It may be you have some air trapped in the system.
    Nathan

    Red Audi A4 B7 S-Line with Leather/Alcantara interior

    Current Mods: Painted Brake Calipers, Gear-driven oil shaft assembly, RS4 grille, Debadged, B8 MFSW, Cruise Control, RS4-style Fog Surrounds, Satin Black Cupra R Splitter, RS4 RARB, Clear Corner headlights, 2011 RNS-e, MTEC Drilled and Grooved Brake Discs.

  6. #5
    NHN
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    If you set the air to different directions to say feet, face, screen, does it then blow hot in any of those positions, wonder if its a flap issue, do a basic setting to reset the flaps, but strange blows hot then cold afterwards.

    OEM RETROFITS - CRUISE CONTROL - SAT NAV - BLUETOOTH - AMI - HEADLIGHT SYSTEMS

    PARKING SYSTEMS - DIAGNOSTICS - FAULT FINDING - BODYWORK - PAINTWORK

  7. #6
    bez101's Avatar
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    1st thing i did vcds and checked all flaps
    all ok
    im gona try bleeding it and then flushing the heater

  8. #7
    NHN
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    Then I would have to agree atm, thats your best way forward for now mate, hope its an easy fix.

    OEM RETROFITS - CRUISE CONTROL - SAT NAV - BLUETOOTH - AMI - HEADLIGHT SYSTEMS

    PARKING SYSTEMS - DIAGNOSTICS - FAULT FINDING - BODYWORK - PAINTWORK

  9. #8
    raffhussain's Avatar
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    Quote Originally Posted by bez101 View Post
    1st thing i did vcds and checked all flaps
    all ok
    im gona try bleeding it and then flushing the heater
    defo heater core needs flushing. i has the same problem. would start warm and the cool down. it happended to me in winter and it was ****ing freezing. lol. flushed the heater core and took for a drive and boom heat. no let me down since. give it a try, nothing to loose. Hope you get it sorted
    CURRENT CAR: AUDI A4 B6 1.8T QUATTRO SPORT

 

 

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