83"735i leaking coolingwater in the heater systems - BMW Forum - BimmerWerkz.com
1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.

 
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#1 (permalink) Old 08-04-2004, 01:28 PM
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samuel is an unknown quantity at this point
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this is a pretty serious problem and i am looking forward to fix it before the winter sets in.

if i use the "defroster" when driving i get coolant water steam up on my front windows, it is hard to wipe of. smells like cooling water.


first time it happend was when i had a hard acceleration at some high rpm, "POOF" the front windshield suddenly got filled with coolant wasser steam. luckely it was a strait road so i could just brake down if there was a turn ther i might be dead today:(


anybody know where the leak could be??
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#2 (permalink) Old 08-05-2004, 10:10 PM
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Bear is an unknown quantity at this point
In the case of the 735/750 it is generally either the heater core is leaking or the plastic pipe fittings that connect to the heater core are broken or hose clamps are not tight that cause this phenomenom.
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#3 (permalink) Old 08-06-2004, 09:05 AM
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well, i did some testing. and here is what happend!

i started the engine, started the fan, and then the klimatecontroller.

it was after that the leakage started and if turn off everything it leaks a little bit more untill it stops. i think the leakage might be after some kind of cock valve.

and btw how much work do you guys think it will be for me to acces this stuff, and should i acces it from the inside? there is no way to access it from the outside without lifting the engine out.
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