[928uk] Engine temps

[Richard Armstrong]

Hi Jon
That is a temperature sender to the fan control unit not a switch. The 
LP/HP switch is on the bottom of the block that the temp sender is 
attached to. I'm not sure whether shorting it is a goo thing or not. I 
guess the low resistence makes the fan controller think the AC gas is 
very hot so I can see how it would have that effect.
Just done a 550 mile trip around cornwall and Devon. Witjout A/C it 
would have been very uncomfortable. I am constantly intrigued by the 
different positions of the 928 temperature gauge. I have some customer 
cars where the gauge reads smack in the middle when warm, and some where 
it sits at the 90 deg 3/4 marker. Mine is the latter and just drifts 
slightly around there depending on the state of the A/C, ambient temp 
and whether the 2nd fan comes on. For sure, without the 2nd fan in 
traffic or if it is a hot day, the engine temp will quickly keep rising
Richard

On 05/06/2024 13:02, Jon Holdsworth via 928uk wrote:
> Short circuit the pressure switch on the top of the receiver dryer canister and the fans will come on MAX when the AC button is pressed in. This seems to be irrespective of internal or external air temperature.
>
> Jon in Sydney
>
> -----Original Message-----
> From: 928uk<928uk-bounces at lists.928.org.uk>  On Behalf Of Paul R Smith via 928uk
> Sent: 05 June 2024 21:34
> To: Paul<ukkid35 at gmail.com>
> Cc:928uk at lists.928.org.uk
> Subject: Re: [928uk] S4 Overheating - Temp Sensor Operation
>
> I have never noticed fans coming on with a cold engine just because the A/C is switched on. Does yours do that now?
> (I can't check on my GT now as it currently has zero A/C pressure).
>
> Smiffy
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