I have a 2007 1.6 hdi (I think 92bhp). Its done 186k miles so around 4 months ago I had the cambelt, aux belt and water pump changed. Around 2 months ago, it started making quite a loud "rumbling" noise on idle (just sounds way louder than usual). When I rev it seems to go though. Sometimes though, I've noticed the car makes a little click noise and it sounds fine again for about 1 second then goes loud again.
Sometimes it tends to chirp every now and then, but not always. I can make a guess that it's coming from the front right of the car, but not too sure.
I've had mechanics look and they've cable tied a few loose things, but no luck.
Any ideas what could be causing this?
Edited by jryans10, 30 April 2018 - 09:10 PM.