I have a new Opel Astra GTC 1.6. I have had it only a couple of months and quite recently there has been a squeak/wail coming from the engine after driving for a while. Revving doesn't clear it. i can hear it driving the car or from outside. I thought it was coming from the timing belt and i brought it to an opel dealer. The service guy had a look, went back inside, got a can of spray and sprayed the belt. He told me that was all and sent me off on my way. It didn't fix it.
I brought it back and they changed the belt. I was told it had expanded when it was waiting to be shipped and so it was slipping. ok, maybe.
Picking up the car, i turned it on and it squealed even louder! Continuously now. The garage still has my car since they don't work weekends. Does anyone have an idea what's causing this???