Changed serpentine belt and ac belt but now both squeal on startup

[DChan88]

Hi,

I just changed my serpentine belt and the ac belt yesterday and noticed that when the cars cold the belts squeal pretty loud for about 3-4 seconds and they go away.. I tighten the bolts and tensioner bolts already as well. they only squeal when the cars cold..

Any ideas?

Thanks

 

[Dracula]

not tight enough

 

[DChan88]

Thanks! I thought it was tight but it was actually quite loose. Solved the issue.

Thanks Dracula!

 

[seanyb505]

General rule of thumb I go by is to only be able to rotate the belt 90 degrees on it's longest run. If you can flip it all the way around, it's loose. Can't rotate the belt at all, too tight.