is this the front fan that turns on at a certain temp? I want this wired to turn on or stay after the car is shut off. Mine does not come on while running the car but after it sits and I turn the key on it is on. It would be nice to keep cooling after car is off.

75 450SL

don't have to solder.... just wrap..

it's the "arthur dalton" fix

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]

The engine generates heat during operation. No operation, no additional heat. The water/coolant helps dissipate the engine heat as the heat transfers from the engine to the water and the water circulates. The water goes into the radiator where the heat from the water is transferred and the water is cooled (sometimes with the aid of the aux fan).

When the engine is shut off the water stops circulating so the water increases in temperature and continues to increase until it matches the engine temp and then they both decrease in temperature together to reach ambient temperature.

The aux fan comes on at a certain water temperature among other reasons. So it comes on when the engine is started after it has recently been allowed to increase in temperature due to water/coolant not circulating.

All this to say that you will need an electric water pump to solve your perceived issue. Our cars were engineered so that we do not need to do anything like that.