On a 82 series 3, only thing I see in the manual is thermotime switch and water temperature sensor, or is it the water temp sensor?

 

As I recall, there is a coolant temperature sensor for the ECU, and also one to drive the coolant temperature gauge on the dash panel. Then there is the thermotime switch that switches the cold-start injector.

The temperature gauge transmitter is small and has a single spade connector on it with a single wire running off. The other two temperature sensing devices have robust plugs and sockets a bit like those found on the fuel injectors. All of these are found on the top of the water rail.

 

Fraser is correct.

Front-most is the thermotime switch. Then there's the sending unit for the temp gauge. Then the temp sensor for the fuel injection. Last/rear-most will be a switch for the canister purge system or EGR system...depending on market. Some cars have nothing at all in the fourth/rear position.

Cheers
DD

 

Ok, my car has been harder to start on a warm start compared to a cold start. is the coolant to sensor between the thermotime switch and the water temp sensor? The on with the single green wire?

 

Single green wire is for the temp gauge on the dashboard.

Thermotime is at the front

Then, just aft of that is the gauge sender....the one with the single green wire

Then aft of that is the temp sensor for fuel injection system

Cheers
DD

 

Thanks, what is the best way to test it?

 

"A picture is worth a thousand words" Heard that somewhere. Just not on this forum.