Hey Zone, Since i bought my 320i the air conditioning has only been producing cold air even when the dial is all way up at the red it still producing cold air instead of warm air, any ideas what could be wrong and how to fix this ?
cheers guys
air conditioning
Moderator: martauto
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SPADGE
- Married to the E30 Zone

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Heater control valve i would supect? I assume these are still the same with air con but i'm sure someone will know better
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- Brianmoooore
- E30 Zone Team Member

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They don't usually fail shut, unless the hoses are on the wrong way around, so that's the first thing to check1SPADGE wrote:Heater control valve i would suspect?
Look in the engine compartment and check that the lower heater stub pipe is connected to the hose that comes from the back of the cylinder head, and the upper one goes to the 'tee' hose.
Turn the heater control to hot, and with the engine up to temperature, check if both the heater hoses are hot near the stub pipes.
Hey Brian, just been out to the garage, all the connections seem to be in good order, just warmed the engine up to tempreture, and turned the heater control to hot, still ain't getting any warm air, any idea's what could be wrong and how to fix this ?
thanx Brian
thanx Brian
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SPADGE
- Married to the E30 Zone

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- Joined: Wed Aug 09, 2006 11:00 pm
- Location: Milton Keynes, Bucks
Were both the pipes hot going into and out of the heater matrix?bmw2006 wrote:Hey Brian, just been out to the garage, all the connections seem to be in good order, just warmed the engine up to tempreture, and turned the heater control to hot, still ain't getting any warm air, any idea's what could be wrong and how to fix this ?
thanx Brian
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john325tewerin
- E30 Zone Regular

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I had one fail on me once in the middle of winter. Only blew freezing cold air. Used have to drive to work with my big winter coat on and thermo gloves.
I swapped the heater control valve and all was well. You don't appreciate something until it's gone.
I swapped the heater control valve and all was well. You don't appreciate something until it's gone.
- Brianmoooore
- E30 Zone Team Member

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- Joined: Mon Jan 10, 2005 11:00 pm
If the pipes are cold, the engine's not overheating and the pipes are on the right way around (you haven't confirmed this), then it probably is the heater valve stuck shut.

