maddoTT

Does anyone else get a noise like the exhausts falling off, when you drive through a puddle?
I also get a lot of vibration, like an engine misfire. Could be that water's being drawn into the intake???<img src="http://homepage.ntlworld.com/maddot99/916.gif">

inblueH2O

Yes. I have experienced the exact same thing twice now but only while driving during a downpour.

JustJeff

by the hot exhaust system.
You are subjecting a spray and stream of water all along a very hot surface.
This would cause a rapid state-change.
think of how much noise you get when you activate the button on a steam iron.
Multiply this, and I think you get the idea.

maddoTT

True Jeff---but no other vehicle I've ever had, did this !

RichP

I get it too, also had it with my A4.

JustJeff

Well, I don't know how else to explain it, the structure of the vehicle, I guess

markrQ7

big rain storms, I'll be on the highway and drive through a large puddle. Following this I have a very loud, grinding sound coming from underneath. I think it's water getting into some of the drivetrain, which can't be good. It only happens when I drive through a puddle, and the noise lasts (I guess) only as long as it takes for the water to drain from the drivetrain. My rear differential is actually very loud now, and I need to bring it up with my service dept. next time.

jdh

I had this happen only once, during a downpour, so there was much water on the road. The best answer I was vibration from cool water hitting a very hot exhaust. The very tight fitment of the exhaust on the Quattro model probably contributes.


Jason
2000 180 TTQ