Hello im new here, just wondering if anyone has a opioion on a weird noise my liberty has been doing lately. It's hard to explain but the best way I can explain it is if im driving along at a certain speed it could be 60 or 100km(Canada) at a steady speed I can hear a whistle or a high pitch sound (it's very hard to explain) if I let off the gas or give it more gas it seems to go away, but when im at the steady speed I can hear it again its weird I have heard it for awhile now. It doesn't hurt the performance or anything at all. Thanks Update, after doing some research and watching a few Youtube video's I think it's a vacuum leak. I will let my mechanic know about it monday when I take it there for a transmission leak, which I think is just a hose. 06 Liberty ive had for 4 years 234,000km.