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E34 (1989 - 1995)

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  #1  
Old 01-17-2013, 01:20 PM
S406 S406 is offline
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Mein Auto: 00 S4, 93 525i
heater issue

My heat gets a little cooler at idle. It still blows warm air but not to my liking. The anti freeze is at its appropriate level and it is bled properly. What gadget is failing. I also dont get heat to the rear or passenger vents. I know nothing about these heater systems. Thanks
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  #2  
Old 01-17-2013, 01:28 PM
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Monsignor Monsignor is offline
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Quote:
Originally Posted by S406 View Post
My heat gets a little cooler at idle. It still blows warm air but not to my liking. The anti freeze is at its appropriate level and it is bled properly. What gadget is failing. I also dont get heat to the rear or passenger vents. I know nothing about these heater systems. Thanks
flush your heater core
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  #3  
Old 01-22-2013, 09:06 AM
S406 S406 is offline
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flush the heater core as in the cooling system? What about the passenger vents blowing cold? Im thinking its the climate control dial?
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  #4  
Old 01-22-2013, 09:34 AM
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BMWFatherFigure BMWFatherFigure is offline
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Mein Auto: E23;E30;E38;E32;E34 +
Why? No matter what temp you select, if you have an air lock or part blocked core the heater won't work..
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  #5  
Old 01-22-2013, 10:28 AM
S406 S406 is offline
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Location: Montana
 
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Im getting heat on the drivers side vents. No rear heat or passenger heat. Thats why I im suspecting the climate control for the pass side. The rear I have no idea....the vents blow cold. Im an lost in understanding the inner working of the heater on these cars. If I get heat through the heater shouldnt it blow heat throughout the car?
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  #6  
Old 01-22-2013, 12:35 PM
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BMWFatherFigure BMWFatherFigure is offline
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It depends on the construction of the core. The rear heat is determined by the driver's temp setting. Sounds like you have flap control problems inside the heater box. I don't envy you this one at all.
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Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #7  
Old 01-22-2013, 01:22 PM
S406 S406 is offline
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Location: Montana
 
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Mein Auto: 00 S4, 93 525i
lol well that sounds promising!! I have a spare I can throw in. Is it a PIA to replace?
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