I have a noise up under my rh dash. It sounds like coffee gurgling away in a coffee maker. It does it frequently, but at odd moments.
Once before a mechanic said it was because my water in circulation was way down---my water pump had a real small hole in it. He fixed the pump, and it was quiet for several months.
It came back.
I don't know that anything isn't functioning right. It's just that it's not normal hearing this coffee gurgline sound at odd moments.
Anyone know what that might be?