Question about 2007 Volkswagen Jetta 2.5 Sedan
The running fan is perfectly mormal. Most cars have an electric fan that will run for up to several minutes after the vehicle is shut off. It's nothing to worry about.
Posted on Feb 13, 2010
The fans run off a cooling fan relay. That is why they run all the time. Replace the relay to correct this problem
Posted on Feb 06, 2010
It is the thermosta's job to send the signal to the fan to activate whenever the engine reaches the right temperature.Also whenever you disconnect the connection to the thermostat the fan will run constantly the minute you have the ignition on.So either you have a faulty thermostat or there is no continuity in the wiring to it, that is a fault in the wires.Hope this helps.
Posted on Feb 06, 2010
Find out the Engine Coolant Temperature (ECT) sensor 2, placed on the left side of the radiator.
Test at component - ECT sensor 2 disconnected from harness.
Sensor terminals 1 & 2 , plug wire colour: yellow & brown (disconnected).
Condition: ECT sensor 2 at +12 Celsius degrees, typical value of electrical resistance = 3600 ohm. At +30 Celsius degrees, typical value of electrical resistance = 1200 ohm.
Test the ECT sensor 2 by a multimeter and replace if necessary!
I guess that the Engine Coolant Temperature (ECT) sensor 2 is out of order. Therefore ECT sensor 2 send to the Engine Control Module (ECM) wrong informations about coolant temperature and ECM starts cooling fans immediately.
Posted on Feb 07, 2010
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Posted on Jan 02, 2017
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