Taken my mx5 for a few drives recently in the cold and the heating takes ages to warm up, when it does, it’s luke warm. If I rev it hard I can feel it warm up more, but normal driving it’s just like warm. It gets up to temperature fine on the gauge. And I’ve felt the pipes going into the cabin and they are not.
I’ve recently replaced the radiator And flushed the system, is the cooling now too good? Or something wrong?