I noticed a problem in my cooling system when the cab was heating up intermittently. My first thought was that the thermostat wasn't operating properly. Then on my way home the engine overheated. I replaced the thermostat and filled the reservior up with coolant only to again have overheating, this time I had about half a gallon of coolant leak from some un-obvious location. I check my work on the thermostat, dry as a bone. I couldn't find the leak but suspect the water pump. Could a water pump cause overheating and the cabin not to heat? Thanks for help anyone!

P.S. I'm trying to learn how to work on my car as I plan on owning it for many years. It is very fun! I'm not trying to be cheap..

 

Your problem sounds like mine, loseing coolant and overheating. I would be interested to hear if you find a cure

 

What year and how many miles?

Avoid driving as much as you can untill you can get this sorted out, a Rover engine can be completely ruined after a single overheat, so be VERY careful with your driving. If you have to drive at all stop if your needle even goes up just a little bit, you want to avoid driving if at all possible though.

 

Because of the possibility of overheating and loosing the engine, I would fill the coolant bottle up, go staright to a shop, have them pressure test the system and get it fixed, "TODAY".
Let us know what they find.