Sorry for another one of these "what's this noise post" but I'm curious if anyone else hears this or might know what it is.
I'm driving for about 5 minutes and I stop at a light and hear this tapping noise like shhhhh...shhhh....shhhh (about 4 beats per second), kinda like air pumping quickly and it lasts for about 1 minute. It's not too loud. It goes away for the rest of the drive.
To describe the noise, if you've ever had your blood pressure checked by a doctor, he puts the thing on your arm and pumps it a bunch of times. It sounds kind of like that but the beat is more rapid. I can hear it from inside the car and from the outside. It's definitely from the right rear, I listen close to the right rear shock and can hear it. It's not the regular shocks hissing sound since the car is not moving.