what is the operating temp of your 400e? (m119) - Page 6 - Mercedes-Benz Forum
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post #51 of 70 (permalink) Old 07-23-2015, 10:30 PM
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First pic is at 98 and second pic is 106...on freeway with A/C on:


I put 1700 miles on it last weekend and it normally ran about 82 C...these were the hottest readings I got the entire trip.


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post #52 of 70 (permalink) Old 07-24-2015, 10:46 AM
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WOW, I never see temps that high unless I'm in bumper to bumper traffic not moving.

That's not normal at highway speeds.
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post #53 of 70 (permalink) Old 07-24-2015, 10:58 AM
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ambient air temp show 106 F....
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post #54 of 70 (permalink) Old 07-24-2015, 11:00 AM
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ambient air temp show 106 F....

Still should not be over 90C at hwy speed, but what do I know.............
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post #55 of 70 (permalink) Old 07-24-2015, 11:07 AM
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it is right, if I think about car moving with 80m/h - this could be equal with the auxiliary fan high speed.......
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post #56 of 70 (permalink) Old 07-24-2015, 11:09 AM
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Originally Posted by pbuchmueller66 View Post
it is right, if I think about car moving with 80m/h - this could be equal with the auxiliary fan high speed.......

Are you a MB technician, or internet expert?

I've driven my 400E in the same ambient temps, 90C is what I saw.
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post #57 of 70 (permalink) Old 07-24-2015, 11:17 AM
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I was agree, after you posted I just said right, ... sorry because I has courage to write or say something - where you posting
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post #58 of 70 (permalink) Old 07-24-2015, 11:23 AM
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You can post what you want, but I will correct mis information.

Aux fan high speed is 105C and regardless, the air entering the radiator
at 80 MPH and the engine only turning 2500 rpm should not have the
engine running that hot.
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post #59 of 70 (permalink) Old 07-24-2015, 11:35 AM
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thank you if you don,t mind, I said YES it is not normal, to high with this speed and temperature, because the auxiliary fan high speed even not stronger as of the airflow with 80 mile/hour and this fan assuring lower temperature. Summary: something wrong with the radiator or with the cooling system - as a same like you think.
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post #60 of 70 (permalink) Old 07-24-2015, 11:37 AM
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Originally Posted by Clarkz71 View Post
You can post what you want, but I will correct mis information...
Finally! The errant nail found the right hammer!
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