Bit of a strange one with my ageing 1996 Ford Escort
I get a high pitch squealing noise from somewhere at the back of the engine bay. It only happens after 15 mins of driving or so. I can't see where its coming out but its definitely not fan belt/water pump/alternator etc related. Its at a higher pitch when idling as opposed to under load.
Any ideas before I take it to the garage? I'm guessing its somewhere in the exhaust system, particularly as the engine bay seemed a little warmer than usual.
Car performs fine otherwise.
Thanks in advance Mark