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Frank
Joined: 10 Feb 2002 Posts: 67 Location: Howell, NJ USA
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Posted: Wed Jul 05, 2006 1:38 pm Post subject: HOT WATER VALVE |
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I do not have a repair manual for my '88 735iL. Could someone tell me where the HOT WATER VALVE is located. This valve controls the A/C inside the car. It directs the A/C to the vents. My problem is that 1/2 of my car (driver's side) blows warm to hot air. The other side blows the A/C air. I was told by the dealer that the HOT WATER VALVE needs replacement. |
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zs6xu
Joined: 17 May 2007 Posts: 3 Location: South Africa
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Posted: Thu May 17, 2007 2:59 pm Post subject: Water valves |
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Hi, just joined
found the same on my 91 730i, demister always blows hot - traced to valves in (my passenger RHD) side, one valve is stuck, going to dismantle tomorrow and feed back, looks like a common problem. took the plug out and put 12 v onto the pins, centre +12v and gnd on the other 2 - one valve clicks the other is stuck
Steven Baynes, 1991 730i 145 000km _________________ Amateur Radio, when all else fails |
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zs6xu
Joined: 17 May 2007 Posts: 3 Location: South Africa
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Posted: Sun May 20, 2007 6:26 am Post subject: repair hot water valve |
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ok, took the valve out with a bit of cussing and small cuts, opened it up and the diaphragms were shot and one of the solenoid pins was jammed, used some silicon spary and removed it and cleaned both with steel wool. The rest of the valve is ok but as a temporary job, just oiled everything and put it back together and back in the car, aircon now gets REAL cold and the valves work but for how long I don't know, will have to order a new one next week
Looks like there is no easy fix to this, I doubt they will sell little parts loose for the valves (diaphragms)
Cheers
Steve _________________ Amateur Radio, when all else fails |
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edjack
Joined: 04 Feb 2002 Posts: 3887 Location: San Jose, CA
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Posted: Sun May 20, 2007 10:44 am Post subject: |
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I remember reading that there are (were?) kits to rebuild these valves. Check with your local dealer. _________________
Ed BMW CCA member since 1987 (Nr. 62319).
'97 540i 6 speed Aspensilber over Aubergine interior. |
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