Thank you all for your responses. It was a leaky radiator! The simplest answer and it took 2 years to figure out. It that because mechanics don't think a woman will know what she is talking about? And it makes me wonder about that water pump I got 2 years ago which didn't solve the problem depsite being told it was all ok and I was being paranoid. Whatever, it is fixed now -just in time for summer!
Karyn
