[928uk] S4 Overheating - Temp Sensor Operation

[Paul R Smith]

That's a big document, and I can't see what you refer to.
But I'm a bit confused, the email you are replying to is from 2007. Do 
you have a current problem, or are you pre-emptively checking your fan 
system?

Smiffy

On 05/06/2024 08:17, Paul via 928uk wrote:
> For anyone who needs an easy to read diagnostic guide, this is invaluable
>
> https://www.928gt.com/T-WallyHVAC.aspx
>
> However, the method he advises to force the fans to run does not work on my
> car, probably because my aircon has lost pressure and is not operational at
> the moment
>
> Therefore I made this by taking an old temp sensor, breaking off the brass
> section, and twisting the wires together
>
> Then I removed the connector to the radiator temp switch and plugged it in
> there, this forces the fans to run with the ignition on
>
> https://thumbsnap.com/i/JCzAYETX.jpg
>
> Paul
> 87 S4 Manual
>
> On Mon, 21 May 2007 at 11:45, Paul<ukkid35 at gmail.com>  wrote:
>
>> Quote from EuroCarParts for:
>>
>> Rad Sensor (Fan Switch)
>> Temp Sensor (I or II - not known)
>> Thermostat
>>
>> £90, but at least they are all in stock. I won't know which temp
>> sensor they have, Temp I or Temp II, until I see it though.
>>
>> Not exactly a bargain, but it's no fun when they're faulty.
>>
>> Paul
>> 87 S4 Manual
>>
>> On 20/05/07, Paul<ukkid35 at gmail.com>  wrote:
>>> No sign of it escaping from the overflow hose, but I hope that's where
>> it's
>>> going - where else could it go?
>>>
>>> Switching the aircon on seems to keep the temp under control, but there
>> was
>>> an initial very high reading after about 4 mins driving, which then
>> dropped
>>> to normal, I'm guessing was when the thermostat opened - perhaps there
>> was
>>> an air lock.
>>>
>>> I'm tempted to replace Temp I, Temp II, the Rad sensor and the Thermostat
>>> all at once. In the past I would have been more frugal, but for once I
>> can
>>> aford to be a bit more extravagant.
>>>
>>> Paul
>>> 87 S4 Manual
>>>
>>>