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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 01-02-2013, 08:41 PM
jeremy107 jeremy107 is offline
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Heat Problem

Hello everyone, I am new to the forum so forgive me if I posted this thread in the wrong section. First of all thank you for allowing me to join the site. My girlfriend owns a BMW 328I four door, not sure of the year model I am new to BMW's also. She came in from work today and told me that her heat is not working, so I just assumed it was out of antifreeze because a couple months ago it had ran very low and the coolant light came on. But this time not coolant light was on so I did refill the antifreeze to full.

Question 1. I asked at the auto part store did the BMW take green or orange antifrezze and they said green.

Questions 2. Is there anything I can check to try and resolve this problem myself instead of taking to a dealer and a 1000$ repart bill. I would say I am very mechinachly inclined, just new to the BMW step up. Any help would be awesome! Thanks everyone and hope everyone has a great new year..
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Old 01-02-2013, 08:49 PM
Leekay07 Leekay07 is offline
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BMW's take BMW coolant. $25 for a gallon of concentrated coolant from the dealer. Your current issue sounds like its either a Water pump, thermostate or even heater core issue.
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Old 01-02-2013, 08:52 PM
jeremy107 jeremy107 is offline
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Is there any steps I can do to help pinpoint on which part it might be?
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Old 01-02-2013, 08:55 PM
Leekay07 Leekay07 is offline
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Without a temp gauge it might be a little hard.
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Old 01-02-2013, 08:58 PM
jeremy107 jeremy107 is offline
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I have access to a shop and verious tools to check things, just would was looking on what steps I need to take to help elimate on what the problem is.
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Old 01-02-2013, 09:07 PM
Leekay07 Leekay07 is offline
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I need to know what year your car is to help. If its pre 06 chances are your water pump is internal and is shot. If its younger then your thermostate would be the only thing that comes to mind as the internal heat sensor would make the car blow hot air rather than cold air. The fact your boiling off coolant also is worry some.
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Old 01-02-2013, 09:15 PM
jeremy107 jeremy107 is offline
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The car has 33k miles on it, not sure of the year I will have to find that out for you. I topped off the coolant while the engine was cold and drove it for about 5 mintues thinking it would fix the problem but it continues to blow cold air rather than hot.
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Old 01-02-2013, 09:19 PM
Leekay07 Leekay07 is offline
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at 33,000 its probably still under warranty (4yrs 50,000 mile warranty and free maintenance)
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Old 01-02-2013, 09:22 PM
jeremy107 jeremy107 is offline
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There just might be a god!!!

If anyone has anymore tips or ideas for me to check, would be great!!
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Old 01-02-2013, 09:24 PM
Leekay07 Leekay07 is offline
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But yes no heat on a new model 3 series = dead pump or dead electronic thermostat.
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Old 01-03-2013, 08:36 PM
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08 335Ci 08 335Ci is offline
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Try this:
Find a steep hill and park the car nose up. This puts the heater below the radiator opening. With the car cold (for safety reasons) top off the fluid and start the car with the heater on full. Top off as required.

This was the only way I was able to get some cars to purge all the air out of the system.
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