My truck is screaming

[98RedExp]

98, 4x4, 5.4, 165k

This is a video of an interesting noise my truck is making now. The noise I am referring to comes at around 25 seconds in. It changes directly with RPMs. Sounds like a super charger, only I know its something much less fun. It comes and goes, mainly prevalent at RPM's 1500-2500 through first and second and then pops back in at over drive gear. Some have suggested its either the idler or the alt pulley. Thoughts?

Video is public, so it should play.

https://www.facebook.com/video.php?v=10203510538744988

 

[Bedrck47]

98, 4x4, 5.4, 165k

This is a video of an interesting noise my truck is making now. The noise I am referring to comes at around 25 seconds in. It changes directly with RPMs. Sounds like a super charger, only I know its something much less fun. It comes and goes, mainly prevalent at RPM's 15000-2500 through first and second and then pops back in at over drive gear. Some have suggested its either the idler or the alt pulley. Thoughts?

Video is public, so it should play.

https://www.facebook.com/video.php?v=10203510538744988

I hope your not running it at 15000 rpm's

 

[98RedExp]

Typo. LOL. 1500

 

[IMINYOURCHAIR]

>15,000 rpm

Probably the exhaust note. Sounds normal ha.

In all seriousness, try to remove the serp belt and check the pulleys for play/etc

 

[Bedrck47]

would also check the PCV Valve just to make sure it's seated properly most likely not the source of the noise but if your under the hood checking things may as well check it

 

[98RedExp]

>15,000 rpm

Probably the exhaust note. Sounds normal ha.

In all seriousness, try to remove the serp belt and check the pulleys for play/etc

Mine is cut off after the cat. I like it mean sounding. LOL.

 

[FordandPolaris]

It's the tensioner or idler pulley! I literally just had my truck start this over the weekend. Fixed it today. Here is a video, very easy fix.

http://m.youtube.com/watch?v=32bD08VSh_I