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Old 05-21-2001, 01:39 PM
Snow bum
Join Date: Jan 2001
Location: Here and there . . .
Posts: 238
I recently replaced my radiator, and my car is running much cooler than before. However, it runs noticably warmer with the air conditioning on. The temperature gauge reached 105 the other day with the A/C running (outside temp was 73). While this is not too far away from normal, it seems relatively high considering the new cooling system equipment.

I called a tech at Mercedes-Benz, and he told me that one of my auxilary fans should be running whenever the A/C is in use. I have only seen my fans run once, and that was before the radiator was replaced.

What could cause my fans to not switch on? I did a search on this site, but I only found a limited amount of helpful advice. Maybe my searching skills are not up to par.

I need to fix this problem, as I am quite nervous about overheating my engine. Any help will be greatly appreciated, and will help me sleep better.

The MBs:
1976 300D (W115) - 330K and still going (sort of)
1991 300D 2.5 Turbo - Sold at 221K
1983 280SEL - Sold at 206K
1981 300SD - Sold at 232K
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Old 05-21-2001, 02:00 PM
Senior Member
Join Date: Apr 1999
Location: Walnut,CA,USA
Posts: 554
Is 300D or 280 SEL ?
MB STARS Master Guild Technician,17 years MB tech
14 years independent shop owner
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Old 05-21-2001, 02:06 PM
Snow bum
Join Date: Jan 2001
Location: Here and there . . .
Posts: 238
I'm sorry, I should have included that. It is the 300D.
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