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        General >> Give/Need advice to/from others >> Cooling fans on full blast
        
(Message started by: Malcolm on Sep 12^th, 2006, 6:16pm)

Title: Cooling fans on full blast
Post by Malcolm on Sep 12^th, 2006, 6:16pm

As soon as I put the AC on in my S reg 2.3 the rad cooling fans come on full blast and stay on till I turn the ignition off, even if I turn the AC off. This happens even when the engine is stone cold. Any ideas?

Title: Re: Cooling fans on full blast
Post by Simmo on Sep 12^th, 2006, 7:05pm

Is the other control set to 'screen'?. If so alter the position and see if that affects things.

Title: Re: Cooling fans on full blast
Post by TiberiuS on Sep 12^th, 2006, 7:51pm

I thought they were both supposed to come on with the AC???

Mine do and I don't remember them always going off with the AC even when the engine's cold, I have a 2.3 like you.

Regards, Bruce.

Title: Re: Cooling fans on full blast
Post by scorpio_man on Sep 12^th, 2006, 8:08pm

hi there

sound like a pressure issue. when was it re-gassed? the fans should run in slow mode as a default, cycling on and off.

when there's a pressure issue (low or high), they come on in high speed mode all the time.

hth

Title: Re: Cooling fans on full blast
Post by Malcolm on Sep 14^th, 2006, 12:50pm

Thanks Guys. I had it re-gassed earlier in the summer. I'm sure it didn't happen prior to that.

Title: Re: Cooling fans on full blast
Post by Malcolm on Sep 14^th, 2006, 10:15pm

Sorted. It was a fault in the wiring to the thermal switch in the A/C unit. Tiberius, if you have the same fault as me than you need to get it seen to because it will ruin the fuel economy. However it may be that what you see is the fans at low speed., which is normal. At full speed they sound like two RB211s.

Title: Re: Cooling fans on full blast
Post by TiberiuS on Sep 14^th, 2006, 10:20pm

Sorry m8, mine are at slow speed ::). Once on a hot day they did go full blast and yes, they did sound like a jet ;).

Please don't curse me with more electrical gremlins, I managed to get mine all sorted a while back :D.

Regards, Bruce.

Title: Re: Cooling fans on full blast
Post by Tompion on Sep 14^th, 2006, 10:29pm

on 09/14/06 at 22:15:45, Malcolm wrote:

you need to get it seen to because it will ruin the fuel economy.

What economy ???

Dave