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vwnewton
vwnewton, VW Owner,ASE Master and L1 Advanced
Category: VW
Satisfied Customers: 307
Experience:  25 years of VW obsession turned into a job, last 15 years as a VW Tech.
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Cooling fan keeps running after engine shut off. Replaced

Customer Question

cooling fan keeps running after engine shut off. Replaced coolant temp sensor, no change. 2005 Touareg V6 3.2l
Submitted: 1 year ago.
Category: VW
Expert:  JACUSTOMER-n3f1w267- replied 1 year ago.

I've seen this before , the whole unit is in trouble I'm pretty sure. You need to remove the fan and see the connection near the fan motor . It is probably corroded !

Customer: replied 1 year ago.
Are you sure we are talking the same vehicle? No need to remove the fan to check he connections.
Expert:  JACUSTOMER-n3f1w267- replied 1 year ago.

Yes , not the big connector with 4 pin .where the wire enter in the motor, those 4 wires are not in a connector . They just go in , in some sort of plastic gel , if you look closely you will see some corrosion !

Expert:  JACUSTOMER-n3f1w267- replied 1 year ago.

Those wires

Customer: replied 1 year ago.
Can I test it with a multimeter?
Customer: replied 1 year ago.
Is this a picture of a random fan? Because the big fan on the T has the control module in the center
Customer: replied 1 year ago.
ignore my last comment, I see what you mean
Customer: replied 1 year ago.
If there is a corrosion issue, why would the fan blow so hard? It seems almost like it gets a signal to go flat out
Expert:  JACUSTOMER-n3f1w267- replied 1 year ago.

It's a fan from a Porsche cayenne or the Touareg that i found on Google just to show you what I meant , there is something going on in the module, sort of a short circuit that makes the fan blow so hard , can't explain why but it happen. I never tested it tough. But I'm pretty sure you wil find corrosion and the problem is right there !

Customer: replied 1 year ago.
Ok, I still would would like to make sure that I can test it somehow, a fan module is ~$500-600 so i want to make sure it is that instead of a broken sensor sending the wrong signal.
Expert:  JACUSTOMER-n3f1w267- replied 1 year ago.

By experience , I would remove the fan , which is pretty easy with one clip on each side , and remove the 4 torx 27 bolt and see if everything is sealed and ok ...