Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Greg2041 on 06 August 2009, 14:15:45

Title: 3 Stage Cooling Fan - When should it cut on?
Post by: Greg2041 on 06 August 2009, 14:15:45
Yet another Omega problem.  The garage have just pointed out that the fan is not cutting in until the temperature gauge reach 100 degrees.  It has been the same since I bought the car.  Apparently only 1 of the 3 Stages is working.  Can anyone tell me what the problem is likely to be
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Pete Elite on 06 August 2009, 14:22:14
Possibly the fan switch on the radiator :-/.
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: omega trev on 06 August 2009, 17:20:50
or possibly the fuse that controls the stages, this happened on my car (3.0 litre v6), the fan on the left hand side of the two in front of the air con condenser was the only one to ever come on at all and that wasnt until 97.5 degrees (on gauge). i posted on here and was told to check the fuses next to the battery, upon inspection there was a broken fuse which i replaced and now all is well so it would be worth having a look at those fuses  ;) ;) ;)
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Richard A on 06 August 2009, 17:28:30
Send my a PM with you email and I will send you 'The Fan Test' which checks everything.
regards
richard a
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Kevin Wood on 06 August 2009, 17:31:04
Quote
Send my a PM with you email and I will send you 'The Fan Test' which checks everything.
regards
richard a

Could we put this into into a Maintenance Guide?

Kevin
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Jimbob on 06 August 2009, 17:32:12
sounds a handy guide, can you create in the test section  :y
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Kevin Wood on 06 August 2009, 17:34:06
Quote
sounds a handy guide, can you create in the test section  :y

Great minds think alike. :y

Fools seldom differ  :-X

Kevin

Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Jimbob on 06 August 2009, 17:35:24
 ;D ;D ;D

you beat me to it  :-[
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Richard A on 06 August 2009, 17:37:23
It's from Terry Wong from Yahoo 'CATERA' group who gave his permission for it to be used, so yes Kevin, however how ?

regards
richard a
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Jimbob on 06 August 2009, 17:40:21
Quote
It's from Terry Wong from Yahoo 'CATERA' group who gave his permission for it to be used, so yes Kevin, however how ?

regards
richard a


what format is it in?
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Richard A on 06 August 2009, 17:53:35
Heres the jpeg:

(http://a.imagehost.org/t/0230/Fan_test.jpg) (http://a.imagehost.org/view/0230/Fan_test)
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Greg2041 on 06 August 2009, 18:00:42
Quote
or possibly the fuse that controls the stages, this happened on my car (3.0 litre v6), the fan on the left hand side of the two in front of the air con condenser was the only one to ever come on at all and that wasnt until 97.5 degrees (on gauge). i posted on here and was told to check the fuses next to the battery, upon inspection there was a broken fuse which i replaced and now all is well so it would be worth having a look at those fuses  ;) ;) ;)

What does/should the temperature needle read in normal operating conditions?

And how do I access the fan switch on the radiator?

Many thanks

Greg
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Richard A on 06 August 2009, 18:13:02
It should be in the middle of the gauge for normal running, when it goes higher in traffic the engine fan should engage.
If you have 'aircon' with three fans they all have two speeds according to aircon and engine temperture.
regards
richard a
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Greg2041 on 06 August 2009, 18:18:23
Sounds suspicious.  Mine has never been in the centre of the gauge but hovering around 100 - but not in the red though.  I'm guessing this is wrong and indicative of the fan problem.
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Richard A on 06 August 2009, 18:24:21
Yes far to hot, just sent an 'attachment' with the 'fan test', see how you go.
regards
richard
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Greg2041 on 07 August 2009, 09:02:03
Help.  Please reply asap as I have an electrician doing some checks for me.

Pins 4 & 5 work but we can't find the Primary and Secondary Therm Connector which we assume goes to the stat.  Anyone know where they are?

Thank you
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Greg2041 on 07 August 2009, 10:04:14
It appears as if the PDF relates to post-1998 models as the wiring colours are slightly different and there appears to be only one radiator switch.

The good news and it's all thanks to this forum and you guys is that all the electrical checks have been done so it appears that the fault lies with radiator switch.

Thank you so much.

Greg
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Richard A on 07 August 2009, 18:11:41
Please look at the righthand side of the diagram ie "Primary Therostatic Switch" then below
"Secondary Thermostatic Switch",
if your car has 'aircon' this arrangement is the same since 1994 until 2004.
Regards
richard a
Title: Re: 3 Stage Cooling Fan - When should it cut on?
Post by: Greg2041 on 04 September 2009, 22:45:03
Thermostatic Fan Switch

I finally have the part.  Do I need to disconnect anything to fit it?  Is it a case of just unbolting the existing one and refitting the new one?

Thanks again..............