PeachParts Mercedes-Benz Forum - ac condenser design causing car to run hot?

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i have a 85 300d, i sold the sdl a long time ago, i wish i could change my user name

I was having a over heat problem with my car as well. I ended up using a radiator flush product by prestone I believe. It required for me to drain the radiator completely and then flush it again with 100% water and then drain it. And fill it back up with the product I purchased and 100% water. I then had to drive the car around for 8 hours. It didn’t have to be all at one time, but I ended up keeping it in the system for over a week. Because I didn’t have time to flush it out. I then drained the system and man that was nasty. You’re going to see a lot of white slim and rust come out of your coolant system. It really made me worry. But after I filled her up with the MB radiator fluid and distilled water I can say I haven’t had an over heating problem.

I think most of the over heating issues people are having is simply by owning an older model car that hasn’t had there system cleaned out. I find this MB to great cars if you keep them will maintained.

Quote:

Originally Posted by TurboSDL (Post 2217002)

i have a 85 300d, i sold the sdl a long time ago, i wish i could change my user name

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Quote:

Originally Posted by TurboSDL (Post 2214921)

i have replaced the thermostat, replaced the water pump, i haven't really flushed the radiator, the old coolant that came out didn't seem dirty at all even tho i put in new coolant, the fan clutch has some resistance to it when you spin it with the motor off so it should be in good shape, i used a hose and sprayed the radiator from the from the engine side out, and the condenser. the radiator looks to be in pretty good shape , the car easily reaches those speeds, iv done 105 in the car just to see what it could do and it could have gone faster had i not been afraid of getting a ticket, but i do like to travel at speeds of 80 85 because when i travel on the weekends from the Chicago burbs to my parents lake house in Indiana its about 2 hours away and i dint like to crawl there.

it just seems to me that if the fins were both in the same direction that the airflow would be much better.

I suggest you re-test the fan clutch per directions in the following threads.

post# 2. Diesel Cooling System:
http://www.peachparts.com/shopforum/diy-links-parts-category/142410-cooling-system.html

Have a great day.