Originally Posted by Fbmbiker860
i have a 97 tj 4.0 and it started making this whistling noise the other day when i accelerate and goes away when i take my foot off the gas or when i change gears but will come right back once my foot is back on the gas peddle. checked all my lines and everything like that no holes or anything. Anyone maybe know what is causing this its starting to get real annoying
Is definitely a whistling and not a squealing? I'm just thinking that it could be a pulley possibly. If you don't find a line off on the intake, shoot one pulley at a time with a lubricant and see if it goes away. Worth a try!