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Old 01-04-2001, 09:25 PM
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Join Date: Jan 2000
Location: Jackson, MS
Posts: 48
Steam came out of the heater vents after my 1993 190E made a spewing sound. I filled the reservoir with new antifreeze, and continued to have heat, but with an antifreeze smell in the car. If this problem is heater core failure, how much of the dashboard has to come out to remove it? Is it too difficult for a at-home job? Thanks.

1999 E300 TD
1999 E300 TD, WVO conversion
2007 Jaguar XJ8
1993 190E 2.3, Limited Edition, 239,000 miles (sold)
1991 300 SL (sold)
1977 MGB
1969 TR6
1980 TR8
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Old 01-05-2001, 08:36 AM
Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
Steam & antifreeze smell could very well be the heater core, or maybe a leaky coupling. In either case I'll guess a major portion of the dash has to come out.

From what I've seen, very little repair work is too difficult for someone of normal skills and ability at-home, provided you've done it a few dozen times, and have a hydraulic hoist, engine puller, brake grinder, tire mounter and access to a good machine shop It's the training and experience that set the techincians apart from us mere mortals

When I saw what the technician removed to replace my AC evaporator in the Audi I realized I won't live long enough to get that kind of DIY experience.

My vote is for you to have a dealer/independent MB shop look at it and get a quote.

BCingU, Jim
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Old 01-05-2001, 09:44 AM
MBenzNL's Avatar
Join Date: Jan 2001
Location: the Netherlands
Posts: 1,417
If a 190 starts to circulate an antifreeze smell and steam, the heat exchanger (or heater core if it is called like that) is most probably broken (this is a quiet common problem of the 190 in Europe).
I think mercedes thought that this device would never break down whilst engineering the 190, because you have to take out most of the parts around the dash (including the complete dash) and behind the engine (underneath the windscreen) before you can get to the heater-home & heat exchanger.
I have changed these heat exchangers several times myself now and I must admit that it is not as tough as it appears to be, but you have to now what you're doing (with the proper tools).
To get the heater-home out easily you have to remove the windshield wiper & plastic caps underneath the windshield/behind the engine cause that's the place to find the mutters to unfasten the heater-home.
Inside the car you have to remove steering wheel, console and dash (which can be done within 2 hours) & when you've removed these parts it is not that difficult any long as you know what to do.
Do not start removing the parts before you know exactly what to do!

good luck

1990 300SL-24
1993 C250D
with a minor 600+k kilometer
(the Netherlands)
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