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Old 11-02-2009, 05:30 AM   #16
dave45056
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The new heater core is in!!! I topped off the coolant and bled the system. I have heat! Drove the car today and it felt great.

I took some pictures... I'll post them tomorrow as sort of a DIY.
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Old 10-14-2010, 11:27 AM   #17
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i know the post its old but i have doubt..to take/replace the heater core out on the ti do you need to remove the all dash?
do you have some DIY w/pics??
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Old 10-15-2010, 02:38 AM   #18
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No, There is no need to remove the dash. Just remove the kick panel on the drivers side, along with the knee bolster. You also need to remove the center console, the air pipe under the dash, and the cowl under the hood. It's probaby the easiest heater core to change. I'll send you some pics if you PM your e-mail.
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Old 10-20-2010, 07:26 AM   #19
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do you guys know the part numbers for the 2 hoses that i need that run from the fire wall the water valve/other?

My heater core has been bypassed so maybe i can still use the one hose that is being used for the bypass, and buy the remaining one?
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Old 10-25-2010, 02:23 AM   #20
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Check out realoem.com

It should look something like this, but be sure to enter you car's info on this site to make sure you get the right stuff.
http://www.realoem.com/bmw/showparts...02&hg=64&fg=18
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Old 10-26-2010, 01:20 AM   #21
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Thanks. Yea I have been looking on realoem.com. The diagrams are a bit confusing because it only shows the 1 hose that runs to the firewall. I think i have found the other hose. Its found on another diagram on realoem:

http://www.realoem.com/bmw/showparts...11&fg=35&hl=14

#13. do you guys know if this is the other hose that runs from the heater core?

http://www.rmeuropean.com/Part-Numbe...0-0eecc06aebe3

thanks for the replies!
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Old 10-26-2010, 01:50 AM   #22
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Thanks, that may come in handy some day...
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Old 10-26-2010, 04:23 AM   #23
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Try this diagram instead
http://www.realoem.com/bmw/showparts...02&hg=64&fg=18

When My heater core went bad I bypassed it, too.
I did this by removing a hose.
To be specific, I removed the one which goes from the heater control valve to the drivers side heater core tube.
Then I ran the hose which you are talking about buying (part no. 64211387010) to the upper port on the heater valve.

So if the heater core was bypassed like mine was, then you have that hose (part no. 64211387010) in your car still.
The one you need is item 4 shown on the link I posted. It does not look like that picture at all, though. It's a very short, bent up hose.

Last edited by dave45056; 10-26-2010 at 05:17 AM. Reason: Added more info
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Old 10-26-2010, 04:50 AM   #24
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Quote:
Originally Posted by dave45056 View Post
Thank you. Correct me if I am wrong, But this only shows 1 of the 2 hoses that run to/from the heater core. (pictured#3 part #64211394295 is one of them)

The second hose i believe is here, picture#13 part #64211387010:

http://www.realoem.com/bmw/showparts...11&fg=35&hl=14


again, correct me if I am wrong..(but hopefully not because i just ordered a bunch of parts.lol)
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Old 10-26-2010, 12:58 PM   #25
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Item 13 goes to the heater core, but I am guessing you need the one that goes from the heater valve to the heater core. Item 13 is a difficult hose to remove. However, If you find you are missing that hose, be sure to replave the plastic fitting it connects to. They break. When it does, you will overheat. There is another y-shaped plastic fitting on the back of the head which has the same problem. My car is 1995 so I don't have that one. I hear it is hard to replace due to limited space.
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Old 10-26-2010, 05:30 PM   #26
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thanks for the tip Dave. Yes, looks like i need both hoses Valve to heater core hose heater core to engine hose.

Heres a pic of what the heater core connector looks like on a 1997 m44.

The engine runs strong and never over heats, so that is a good sign. Does anyone know what potential problems, not having the heater core return hose hooked up to the heater core (as seems to be the case) might cause?

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Old 10-26-2010, 06:23 PM   #27
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Can you take a picture of your heater valve, too?
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Old 12-18-2010, 09:11 PM   #28
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I have a 96 318ti with 176k on it. My heater has started blowing cool air at idle, but when I rev up to 2k-3k it blows hot air! Is this my heater core or the thermostat something else?
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Old 12-18-2010, 09:34 PM   #29
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At idle, your pump is just pushing less hot water through the heater. They all do that to some extent. Even with an S50 engine in my car I can feel the heater less effective at idle than when driving. But the heater core is just a small radiator, and can get plugged just like the main radiator -- that would feel like the heater valve was not all the way open.
If it was the thermostat, the water temp gage would read low.
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Old 01-14-2011, 07:37 PM   #30
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My car has no heat at all! It blows iceicles actually lol I tryed bleeding the coolant like five times. It helped a little bit for the next couple days but now im thinking its the haeter core. :/ about how much does a heater core run?
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