the temp reading is intermittent, suspect loose connection. Anyone know where the sensor is located so I can try and find it, put some WD40 on it and make my temp gauge work again?

Thank you.

Could well be a duff sender. If you do decide to replace it, get a proper part, and don't be tempted by the cheapo parts on ebay.

Thank you, where is the sender located, only just got the car and the Haynes manual hasn't been procured yet )

Not sure where the sender is located on the 130 I am afraid. I have a picture of where it is on older 110. Hopefully a 130 owner will be along shortly and be able to point you in the right direction.

It is worth getting a new o-ring when you change the sender over.