Is the coolant level OK, not dropping?
Is the engine reaching normal operating temperature on the dash gauge?
More likely to be a choked heater matrix or faulty heater controls.
I assume it is a Rover 25, what year?
fred
November 2009
I know precious little about cars but I'm pretty sure that a car heater does not have the gift of premonition.
Peccavi
November 2009
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