1990 Laser TX3 whining/whistling sound when revving
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Hi
I recently had a broken head gasket replaced. At the same time, other things that were also replaced including the timing belt, both drive belts, radiator and water pump. Since I got the car back, there has been a whining / whistle sound when I rev the engine. This occurs if the car is in neutral or in gear. The sound is higher pitched than the normal engine sound and quieter. The frequency of the whistling increases with higher revs and decreases again when revs are reduced. The sound is most audible when changing gears due to the constant increase / decrease in revs. When at constant revs, the sound is hard to make out and I'm not sure if is present but not noticeable (because it is not changing frequency) or simply not present.
Aside from this issue, the car has been carefully looked after and is in pretty good condition. It has done close to 200,000 kms.
Does anyone know what might be causing this sound? I have taken the car back to Ford (who did the repair) but they weren't sure what the problem was.
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