I have a 99 GS400 and I did 100 on the highway today, came home and decided I wanted some ice cream went to the grocery store came out and noticed this whining humming noise coming from the engine bay hoping it's not anything super expensive lol 🤣 so I guess I have to add this idler pulley to the list. Oh also why does this car have issues with the front suspension I've just replaced upper and lower control arms etc now I'm about to do the Rack and pinion because I have some play in it that I noticed when I had it in the air doing my oil change.
