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Thread: Hot air blowing only from vents. Is this a common problem?

  1. #1
    Join Date
    Jan 2004
    Posts
    14

    Default Hot air blowing only from vents. Is this a common problem?

    Hi,

    I have a 1995 530i/5sp manual. When I turned on my fan, only very hot air came out. Is this a common problem?

    Thanks in advance.
    1995 BMW E34 530i/5sp

  2. #2
    Join Date
    Jan 2004
    Location
    Laplace, LA
    Posts
    74

    Default

    Quote Originally Posted by Badshift
    Hi,

    I have a 1995 530i/5sp manual. When I turned on my fan, only very hot air came out. Is this a common problem?

    Thanks in advance.

    Although my compressor is completely shot, I have the same problem.

    90 525I

  3. #3
    Join Date
    Jan 2004
    Location
    Melbourne, Australia
    Posts
    130

    Default

    Faulty heater valve seems to be a common fault - it is solenoid operated and if it sticks in open or 'on' position then you get hot air even when you don't want it. The valve is attached to the heater water hoses in engine compartment, near the fire wall. You should here or feel the valve solenoid operate when heating is selected. Sometimes the valve parts seize up inside and can be loosened up (you need to remove it) to get it working again.

  4. #4
    Join Date
    Jan 2004
    Location
    Laplace, LA
    Posts
    74

    Default Thanks. I'll try that. Is it a difficult job?

    Quote Originally Posted by bill g
    Faulty heater valve seems to be a common fault - it is solenoid operated and if it sticks in open or 'on' position then you get hot air even when you don't want it. The valve is attached to the heater water hoses in engine compartment, near the fire wall. You should here or feel the valve solenoid operate when heating is selected. Sometimes the valve parts seize up inside and can be loosened up (you need to remove it) to get it working again.

  5. #5
    Join Date
    Dec 2003
    Location
    Sydney, Australia
    Posts
    308

    Default Heater water valves

    It's a commom problem on E34 and E32s. Try this link for the fix
    http://www.users.qwest.net/~gbower/b...eatervalve.htm

    hope this helps
    Phil

  6. #6
    Join Date
    Jan 2004
    Location
    Williamsburg VA, USA
    Posts
    20

    Default Just had this problem ...

    I was able to free up the valves by lightly but smartly tapping them with a long 3/8" extention and a large adjustable wrench(they were handy). I read somewhere that it worked for someone else. Next time it would be the first thing I try and I'm sure it won't work then.

    Karl

    Quote Originally Posted by Badshift
    Hi,

    I have a 1995 530i/5sp manual. When I turned on my fan, only very hot air came out. Is this a common problem?

    Thanks in advance.

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