1986 Petrol Manual Range Rover Classic. Last week it wouldn't start (typical, just when the snow arrived)
At the weekend I towed it, and it started almost immediately. Drove it about 20 miles, stopping a few times, and it behaved fine. On Monday, with floods forecast, it wouldn't start again. It tried a couple of times - then nothing
I've fished around, it has petrol, spark etc. so I started thinking about cold start problems and went for the Coolant Temp Sensor in the head. Measured resistance of 47 Ohms, whereas an article I found on web suggested it should be about 4.7K at 0 deg. C, reducing to about 150 Deg C at boiling.
Brought culprit into work today and inspected closely with magnifying glass, and it says:-
5 89 (I'm guessing the date of manufacture)
35Deg. C 8 Sec
A search on the top number identifies it as a "Bosch Thermo Switch", fitted to a Ferrari 308GTB, Mondial, Jag XJ6 or Peugeot 505 - but not to a Range Rover.
As it is younger than the engine, so someone has fitted it at some time in the past. It was located in the front of the head where I think from the handbook the temp sensor should be.
My question is.... does anyone recognise the part, is it an appropriate replacement - or is it completely wrong and the poor old thing has been starting in the absence of any correct engine temp data. I will say it has always been a slightly reluctant starter, esp. when its cold out.
Any observations gratefully received