Hi everybody,

I have a Skoda Octavia 2 , 1.9 TDI from 2006 ( with basic air conditioning / clima ) . Since 1.5 years it has had a strange noise from time to time: sometimes when I would turn on the ignition, or start the air conditioning , or press the recirculation button. The noise stops by itself after a few seconds. The air conditioning works perfectly, heats, cools, no problems. This week I went to do the 4 years maintenance service and informed them about the problem. When I got the car back they said they've noticed the noise, but didn't have time in 2 hours to investigate a lot ( so bring the car another time, we'll work for a few hours and take your money, and maybe we'll fix it ). Since this maintenance service, the noise is constant when I turn the key to the on position , or when I turn on/off the air recirculation. Below is a clip I've made with the problem. Any ideas ?

Thanks for your time!

Hi there, here is a video of a similar noise I had, bear in mind that this was with ingnition on but no engine, it sounded a little similar from in the car, it was the EGR valve 700 euros later, no noise.

I've just been to the car. With the bonnet up I can hear the sound coming from the top left corner, looks like a metal tank with the chassis's series on it, right above the coolant tank. Any idea what that is ? The sound I hear when I'm close to that spot is of equal intensity to the one I hear inside.

Edited 5 May, 201016 yr by BogdanST