Squeeling aux belt, even though its tight?

[seanofnp]

Could we have over-tightened?

Doesn't squeel on idle, but does when revved or driven, also going round left hand turns it makes a god aweful noise sounds like the belts getting more contact or something, Dont think its bearing, sounds tinny.

Suggestions?

[northy]

i changed the pas and new belt - silent. before it was sqeeky and did ocasionally jump

[Wobba]

Loose any tools or bolts in the engine swap? I did, can hear them...conspiring to ruin my car somehow...I swear it!

[white16valver]

I lost a bolt or two when working on mine - never did find it lol