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Thread: Humming A/C

  1. #1
    macattax's Avatar
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    Humming A/C

    I am getting a sort of humming noise fro the A/C control unit.
    Symptoms are that when you start the car you get this humming sound from a/c. I have the temperature set at 24 these days.
    The blower A/C doesnt control the blower accordingly.
    After the car has been running a while the blower works more efficently with the A/c.
    I thought it was the blower and replaced it but thats not the case.

    Is there a temperature sensor connected to the A/C which could be on the fritz?
    Its like it takes ages for the A/C to detect what temp the inside of the car is and blow accordingly.

    Any ideas guys?

    FACELIFT 99.5

    Current Mods: RNS-E MMI Conversion,Carbonio CAI,
    Baileys DV30 valve, Tinted windows, Xenon H.I.Ds, Bosch Aerotwins.


    Planned mods: Rieger Kit,Engine Tuning, Leather sports seats.
    Accomodation when the missus kicks me out for wasting money on a car.

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  3. #2
    macattax's Avatar
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    Bump! anyone?

    FACELIFT 99.5

    Current Mods: RNS-E MMI Conversion,Carbonio CAI,
    Baileys DV30 valve, Tinted windows, Xenon H.I.Ds, Bosch Aerotwins.


    Planned mods: Rieger Kit,Engine Tuning, Leather sports seats.
    Accomodation when the missus kicks me out for wasting money on a car.

  4. #3
    andybnwc's Avatar
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    i got a loud buzzing noise coming from the ac unit so took it out and took it to pieces cleaned all connectors then put back together and everything was fine , maybe try this first before shelling out money
    99 Nogaro S4 now black bonnet and roof,blackdiamond discs and pads,Hybrid K04 with uprated actuators ,Rs4 clutch custom lightweight flywheel, esp lightweight pulley set ,Rs4 intake pipes ,rs4 mounts ,full samco hose set,F-hose delete ,BMC carbon induction, full stainless exhaust with de cat pipes, custom chip,18"ultra lights,LED rear clusters,6000k xenons ,LED sides,KW coilovers,powerflex bushes ,Boost guage in pillar pod,isotta steering wheel and gearknob,B&M short shifter

  5. #4
    macattax's Avatar
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    Did you have a lag before the a/c started using the blower efficiently?

    FACELIFT 99.5

    Current Mods: RNS-E MMI Conversion,Carbonio CAI,
    Baileys DV30 valve, Tinted windows, Xenon H.I.Ds, Bosch Aerotwins.


    Planned mods: Rieger Kit,Engine Tuning, Leather sports seats.
    Accomodation when the missus kicks me out for wasting money on a car.

  6. #5
    andybnwc's Avatar
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    well it used to start blowing harder about a minute after i set of driving if thats what you mean
    99 Nogaro S4 now black bonnet and roof,blackdiamond discs and pads,Hybrid K04 with uprated actuators ,Rs4 clutch custom lightweight flywheel, esp lightweight pulley set ,Rs4 intake pipes ,rs4 mounts ,full samco hose set,F-hose delete ,BMC carbon induction, full stainless exhaust with de cat pipes, custom chip,18"ultra lights,LED rear clusters,6000k xenons ,LED sides,KW coilovers,powerflex bushes ,Boost guage in pillar pod,isotta steering wheel and gearknob,B&M short shifter

 

 

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