Loud horn sound coming from engine are.
2 Answers
Nautica85 answered 7 months ago
your alternator belt is letting you know that it needs to be changed very soon sometimes they call it the serpentine belt..
kmcgmc answered 7 months ago
If it whistles continuously except upon acceleration, it is a the EGR valve. I had this problem on my VW Passat (2006) and there was a recall for the plastic part that failed. Upon opening the hood, you will know if it is a belt or a whistling relating to the intake. Belts squeal, and the weird EGR valves that fail make the most annoying sound in the world.
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