Horrible sound when I crank my truck up

I have a 2003 Tacoma 3.4 double cab. Everytime I crank it up the belt starts to make this horrible noise. Does anyone have any suggestions?

 

Describe it. Like a squeal?

 

You have tried to tighten your belts right?

 

Need a little more info. What does the horrible sound sound like?

 

guess we dont get anymore info

 

It is a squeal until the truck gets warmed up so it goes one for about one minute

 

And I've tightened my belt four times but it loosens up everytime I drive it.

 

Sounds like you will have to replace the bolt you are tightening that come loose. Also change the belt?

 

Ok thanks

 

Three different belts.

 

check underhood area for cats

 

Or pieces of cats. Cat guts on your belts/pulleys WILL cause them to slip.

 

Exactly....

 

Idler pulley could cause the squeal to. But not usually

 

MEW !!!

 

how bout remove all of your belts and start your truck to see if the noise persists. if not, buy new belts and put the first belt on and try again. if no noise, put second belt on and try again, if no noise put third. if still no noise then your belts were the issue and youre good to go with new belts.

if you get noises during the replacement, that component is the issue. noises without any belts on indicates timing issues. replace components.