It was 40 degrees this morning which is the coldest it’s been in a while where i live and on start up my engine started making this noise. It is LOUD. Any ideas what it could be? I am thinking serpentine belt maybe though it looks brand new
Alternator or idler pulley or belt tensioner. Remove belt and spin the pulleys by hand should tell the story
That's only how it was done on early TJs like your 97. Later models like his 04 use a spring-loaded idler pulley.You can completely unthread the bolt from the tensioner. It just threads into another piece that’s attached to the bolt that’s used to tighten and loosen that same pulley. They shouldn’t really have too much play in them. If you can spin the pulley and it stays spinning it’s probably good. If it stops or grinds when spinning them by hand the bearing is shot inside them.
That's only how it was done on early TJs like your 97. Later models like his 04 use a spring-loaded idler pulley.
I loved my previous 97 TJ (stolen) and yes there were definitely some differences.Oh gotcha. My 97 is a completely different monster I’m finding out lol
I loved my previous 97 TJ (stolen) and yes there were definitely some differences.
@DropTopDon did you get this sound resolved? What did it end up being if so?
I did not. I bought a new belt tensioner/pulley and replaced it. That was not the issue though. Whenever the weather is below 40 on start up the jeep still makes the noise. Idler pulley seems fine too
I did not. I bought a new belt tensioner/pulley and replaced it. That was not the issue though. Whenever the weather is below 40 on start up the jeep still makes the noise. Idler pulley seems fine too
Did you ever get this noise resolved? Mine started squealing when it is cold and stops squealing after less than a minute.