Quote:
Originally Posted by armouror
have done a lot of research on 190e w201 and found that if thermo switch is not working and magnetic fan does not turn on the engine overheats and eventually destroys head gasket and radiator fill ups with oil and it is a common problem all related to thermo switch failure these cars run hot.
The images show damage to gasket and head and thermo switch which cost $21.00 from :- https://www.***************/index.html
a compression test and a leak down test did not reveal any problems because the damage was water jacket to oil ways
have replaced head gasket, new thermal switch and new radiator hoses and thermostat.
washed out radiator with washing up liquid then did same to rest of cooling system 3 times by running car to running temperature for several minutes allowing engine to cool down replacing water each time and finally filled cooling system with distilled water and Castrol corrosion inhibitor / cooling agent.
And my friends Baby Benz 190e w201 1.8 ltr runs like a dream. hope this helps Sydney from Australia
The blue car is my 1964 220sb engine rebuilt by me as was most of the restoration
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Oooh now I can read it...
Aren't they wax operated?
I just broke one of mine
so I had it replaced
Mine was in the intake manifold
so there may be many did thermal switches
Interesting as car had close to oeverheating problems
Never saw any oil in coolant res
not least before they put in a new radiator
Then I saw some scum floatimg
Not sure what that was?
Hoping its not oil
Will have to check that again
Hope it didn't happen recently