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vauxdoc, GM Europe master tech
Category: Car
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Experience:  25 years GM factory trained ATA UK registered
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vauxhall frontera 2.2: frontera 2.2 petrol with cam belt year

Resolved Question:

frontera 2.2 petrol with cam belt year 2000 ecotec 4 cylinder. no air con.

where is the cooling fan activation sensor switch. fans on radiator seem to come on early or not at all,

is an ecu controling these cooling fans..where is it as well.
Submitted: 4 years ago.
Category: Car
Expert:  vauxdoc replied 4 years ago.
Welcome to Just answer, The cooling fan is ultimately controlled by the engine control unit, this receives a temperature signal from the ECT sensor at the rear of the cylinder head, the ECU then sends a signal to the fan relay which switches the fan on and off , there is a picture of the ECT sensor below No.2

I hope this helps, best regards, Vauxdoc.
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