Aux Fan always runs - MBWorld.org Forums

Jun 16, 2008 | 03:53 PM

Flatlander1961

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1983 240D 356K, 1985 300D 268K

Aux Fan always runs

Does anyone know what tells the Aux fan to turn on? My comes on no matter how cold the engine is. All I know is there is no sensor in the radiator. My car is a 1983 240D. It has 343,000 miles now

Jun 16, 2008 | 06:40 PM

240D 3.0T

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From: Federal Heights, CO

1982 300D VNT, 1980 240D 3.0T, 1982 300TD

The sensor on the A/C receiver dryer (Behind the right headlight). The fan does not get turned on by the engine coolant temperature.

Jun 19, 2008 | 05:00 PM

Flatlander1961

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1983 240D 356K, 1985 300D 268K

One more ?

If my freon is depleted, would that make the aux fan come on also?

Sep 14, 2008 | 11:32 PM

tanktube67

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From: SFV CA

2008 Black Out C350 Saks Edition / 87 VW GTI

Quote:

depleted

what do you mean by that?

Dec 5, 2008 | 11:37 AM

Flatlander1961

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1983 240D 356K, 1985 300D 268K

Sorry it took so long: My freon is depleted and I was wondering if that would cause the sensor in the drier to think the aux fan needed to come on?

Dec 6, 2008 | 02:31 PM

240D 3.0T

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From: Federal Heights, CO

1982 300D VNT, 1980 240D 3.0T, 1982 300TD

No, that would prevent it from coming on.

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