If its water pump there should be coolant leak. At present there is not a single drop of coolant fluid drip I see on the floor.
If its Thermostat then it will not get cooled at all. When I switch on the a/c it does cool. When I am in the motorway I could sense the coolant does not evaporate away easily. When I go into city with a/c on and traffic I could see the cooling getting down slowly and temperature needle raise.
The moment the vehicle moves faster and into motorway I could see the temperature needle come to needle pretty quick.
Given all these observations to guide in identifying the most likely cause. I suppose it seems to be the fan as I have seen or heard the fan working.
Please provide more guidance. Thanks.
The fan failure seems to be the likely cause as the moment the vehicle moves faster or gets out from the traffic the temp needle immediately moves towards the middle. The moment I stop in the traffic it shoots up.
The cause of the failure of fan - is it something simple and easy to get fixed or is it a complex and a costly repair?
One final information...
If its water pump - will this be very costly? how much I can expect for this?
And, will they normally do a pressure & leak test when they do the water pump or fan fix or is it done at extra cost?