lightsareout

I have a 2015 5.0 - got it used and have only had it since December. Currently has 43k miles. The past month it has started to squeal for 2-5 seconds upon starting. This is not every time its started so its being difficult for me to diagnose. It sounds like it would be related to the belt/pulleys but I may be way off. Any help would be greatly appreciated.

Mlarv

Check the belt tensioner. Use a bit of WD40 on the bearing and see if it makes it stop, if it does replace it the WD40 is not an oil and will not make it any better. How dirty is the front end of your engine? I would clean it really well with a bit of soap and water then start it up and let it dry. After that give a pulley a day a shot of WD40 until you find it.

WrestlingCoach

2015 I had the same squeal. Turned out AC compressor was on it's way out and causing the belt to drag and squeal on start up.

StonedFX4

Could be a loose belt or any of the pulley bearings on the belt path. GL

waltheraustin

New belts under warranty. Rained last night so got to test it this morning. Quite as can be