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  #1  
Old 12-04-2002, 08:00 PM
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Join Date: Jul 2001
Location: Atlanta, GA
Posts: 13
Steam and Heaters

Recently, when I turn my heat on after the car has been on for a while, something under the hood starts steaming. If the heat is on when I start the car, it doesn't do this. It doesn't smell like just water that is evaporating. It almost smells like coolant. By the time I get out of the car to see what was steaming, it stops. Could this be related to my heater core/valve?

I have an '82 240D (W123).

TIA
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  #2  
Old 12-04-2002, 09:56 PM
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Join Date: Oct 2002
Location: Portsmouth UK
Posts: 170
RU sure?
RU losing coolant - check expansion tank.
Not sure of the prevailing weather in your neck of the woods but even rain has to be boiled off if it gets into your radiator matrix - this will have an 'engine smell' unless radiator is fairly new.

Mark your expansion tank when cold and then at operating temperature with a strip of masking tape at each level - then you can check daily easily.

Good luck
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230 TE (W124) 1989 with 153,000 miles on the clock - hoping for at least another 100K
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  #3  
Old 12-04-2002, 10:36 PM
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Join Date: Jun 2001
Location: San Francisco, CA
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NormanB - I use to have a 240D and I was wondering .... do they have expansion tanks?

cheech9 - If you smell it and see it, that's a good indication it is there (the leak that is). Look around carefully. Generally, if the steam is coming out the grill, it is most likely radiator or close by.

Also look at the water pump on the bottom. They tend to start leaking a little, then more and then totally let go!

You can always get a pressure check on your system. Hey, maybe it is only a bad radiator cap.

Haasman
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Last edited by haasman; 12-05-2002 at 10:51 PM.
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  #4  
Old 12-05-2002, 08:34 PM
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Join Date: Oct 2002
Location: Portsmouth UK
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Red face

Hi Haasman

With devastating diplomacy and wit you expose my complete lack of knowledge of the 240D.

As you owned one you know.

I give way to you

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230 TE (W124) 1989 with 153,000 miles on the clock - hoping for at least another 100K
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  #5  
Old 12-05-2002, 10:51 PM
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Norman,

Geesh .... I don't know what to say .... but thank you. But .... remember it has been a while since I looked under the hood of a 240D.

Never-the-less, I will always love this car. Just does what it is supposed to do, for a long long time.

Haasman
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