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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 03-23-2011, 07:51 PM
hotwire73 hotwire73 is offline
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Help, heat and ac stops anytime car is still

Ok I thought it was a thermostat thing back in the winter. When Im driving heat is awesome, but if I stop or just let the car sit at idle it completely stops. Well its warming up and its doing it on the AC side to, when Im driving it works great, but if I stop at a light or anything it stops blowing cold and starts blowing warmer and warmer.
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Old 03-23-2011, 10:19 PM
SUNZOUT SUNZOUT is offline
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For Heat
Very common complaint. You have air in the cooling system - Get a coolant flush (if it's over 2 years since last change) and then bleed the system.

For cold

Make sure the electric fan (in front of the radiator) is working - it should switch on whenever you turn on the AC.
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Last edited by SUNZOUT; 03-23-2011 at 10:21 PM.
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  #3  
Old 03-23-2011, 11:38 PM
Skyhawk Skyhawk is offline
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Quote:
Originally Posted by hotwire73 View Post
Ok I thought it was a thermostat thing back in the winter. When Im driving heat is awesome, but if I stop or just let the car sit at idle it completely stops. Well its warming up and its doing it on the AC side to, when Im driving it works great, but if I stop at a light or anything it stops blowing cold and starts blowing warmer and warmer.
Maybe have a look at your Blower fan resistor..Maybe it is defective??
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Old 03-27-2011, 02:35 PM
hotwire73 hotwire73 is offline
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Well apparently the car was hit in the radiator area. The only fan I have is the one on the block. Odd they repair the AC system to where it will work but not bother with the fan. Anyway I may just look for an after market one, is this fan in front of the radiators, or behind them on the block side. From what Im researching its in front of everything at the very front of the car.
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Old 03-27-2011, 03:32 PM
hotwire73 hotwire73 is offline
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Im on car-parts.com. Im finding before and after fans. I gota ask how many fans are they here? I have the one on the block that is driven by belt, and that is it. Did they leave alot of stuff of here or something? Really like to find some pics to see what Im dealing with unless there is just an AC condensor fan front at grill, and the fan on the block for the radiator.) Seems like there is a place for another fan on the radiator itself inside the engine compart facing the block. Please advise so I can at least start ordering so correct parts.
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Old 03-27-2011, 03:42 PM
SUNZOUT SUNZOUT is offline
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You don't mention your model but all models have a Pusher fan in front of the radiator

example below

http://www.realoem.com/bmw/showparts...47&hg=64&fg=60
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Old 03-27-2011, 05:56 PM
hotwire73 hotwire73 is offline
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Oh sorry, 96 first year made; and the 1.9 I believe, its the smaller engine of the two made that year. Says front cross member which on mine is right in front of the condenser. Thing is its right up almost touching the condensor itself. Wish you could post pics here. Anyhow thanks for the diagram, at least I know its suppose to go in front of it as a push air flow system. Ill order one from the parts.com and have bmw install it if it can be.

Last edited by hotwire73; 03-27-2011 at 06:00 PM.
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