Water temperature switch

[Ian65]

on a S3, is this just a sensor for the automatic choke?
anyone know?

[David Nock (RIP)]

There seems to be 2 switches, one for the auto choke and the other straight into the Emissions Control Unit. Designated No. 1 and No. 2 water Temp Switches.

That\'s on the Haynes diagram for S2. Can\'t say I\'ve ever noticed then on the engine.

[Ian65]

on the s1 cars, there was water temp switch in the top left hand corner of the radiator.
On my s3, there are only 2 sensors / switches to do with water temp, the temp sender under the oil pressure switch that controls the temperature gauge and the temp switch in the thermostatic housing which is the one I suspect probably provided a signal for the automatic choke.

As I\'m no longer using the Nikki on my Elford, the auto choke is now a manual choke and so if this is all the temp switch does, I can cut it out of my new loom.

I can\'t think of anything else it could be for???

I\'m a bit sceptical of the Haynes manual wiring diagrams, they seem very mixed up between various models and different markets to me.

[johnnyboy]

on the s1 cars, there was water temp switch in the top left hand corner of the radiator.
On my s3, there are only 2 sensors / switches to do with water temp, the temp sender under the oil pressure switch that controls the temperature gauge and the temp switch in the thermostatic housing which is the one I suspect probably provided a signal for the automatic choke.
 
As I\'m no longer using the Nikki on my Elford, the auto choke is now a manual choke and so if this is all the temp switch does, I can cut it out of my new loom.
 
I can\'t think of anything else it could be for???
 
I\'m a bit sceptical of the Haynes manual wiring diagrams, they seem very mixed up between various models and different markets to me.

Our Elford has a choke thet we pull out manually but which goes in of its own accord after a short time (if you have not pushed it in beforehand....) - is this what you mean by "automatic"?
I only say because of course we have the same SU carburettor as you, so there must be some way of connecting your choke up to your SU in the same way and therefore still having it "automatic".
 
I shouldn\'t admit it but having got used to not having a choke on modern cars so I am highly likely to forget to push in a manual choke until the plugs are well oiled....
 
John

[Ian65]

Our Elford has a choke thet we pull out manually but which goes in of its own accord after a short time (if you have not pushed it in beforehand....) - is this what you mean by "automatic"?
I only say because of course we have the same SU carburettor as you, so there must be some way of connecting your choke up to your SU in the same way and therefore still having it "automatic".
 
I shouldn\'t admit it but having got used to not having a choke on modern cars so I am highly likely to forget to push in a manual choke until the plugs are well oiled....
 
John

That\'s very interesting ... I\'d read some where that the Elford conversion did away with the auto choke ..... probably just more nonsense written in the motoring press about the Elford.
I\'m glad it retains the auto choke... when I first owned a RX7 many moons ago, I remember being very impressed that the choke returned by itself once the engine was warmed up.... it seemed very hi-tech at the time and I still think it\'s a nice touch

Maybe I\'m just easily pleased!