Viscous fan coming on almost instantly

[Ali roper]

As the title says.. my viscous fan comes on after a few minutes and stays on, making the car sound like a hovercraft it’s a 2.8 1999 pre facelift. When does everyone else’s come on? I’m acquiring the parts to delete it completely

[LaRy]

I have a 2.8l 1998 and I would say that I never hear any fan. Seems to be disconnected, rotating slowly all the time.

[Robert T]

My viscous fan hardly ever comes on. Occasionally hear it after a longer run in summer as I'm putting it away in the garage when there is no airflow through the radiator.

I've never heard of them becoming oversensitive. When they fail, they seem to lock up completely. Is your car running warm?

Cheers R.

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[Ali roper]

Temps running fine, it has literally locked up but not quite. I’ve removed it now and am sourcing parts to delete it altogether.

[Andyboy]

Don't delete it, it's there for a reason.

A new coupling isn't expensive.

[Mike Fishwick]

Don't blame the viscous coupling - it is trying to tell you that it is past its sell-by date!

You do not tell us how many miles your car has covered, ut 70,000 miles is an average life for a viscous coupling, after which it makes a lot of noise and can possibly break up, throwing a blade through the radiator.

If your car has a/c the condensor fan will keep the engine cool (as on the 2.2 models) but like anything else, it can give problems too. It is always wise to have a backup, so fit a new coupling - and carefully check the blade roots for cracks.