My '95 C4 is making a mysterious whining/screeching noise at cold start. The noise lasts about 10 seconds and if I touch the window or sunroof switches there is a slight increase in the noise. First guess was the AC converter belt but after tightening it at a local specialist the noise still persists exactly as it was.
Also when I start driving there is another screeching sound which comes only when driving with a gear selected. If I push the clutch down the noise disappears. This noise last for about the first 200m after cold start and then goes away.
Both noises appear only when starting the engine cold, even after the car has been standing for a few hours it starts normally without any issues or strange sounds, so these sound only appear with the 1st start of the day.
Also both noises started to occur at the same time a few weeks ago, so I'm wondering if they could be related.
Any idea what might be the source of these noises? All thoughts are very much appreciated.
Also when I start driving there is another screeching sound which comes only when driving with a gear selected. If I push the clutch down the noise disappears. This noise last for about the first 200m after cold start and then goes away.
Both noises appear only when starting the engine cold, even after the car has been standing for a few hours it starts normally without any issues or strange sounds, so these sound only appear with the 1st start of the day.
Also both noises started to occur at the same time a few weeks ago, so I'm wondering if they could be related.
Any idea what might be the source of these noises? All thoughts are very much appreciated.
