What would cause a squeeling noise on startup on a 5.4. It just does it when I go to start it then stops

 

Ain't that usually the belt?

 

Your belt is going out. Just take a look at it. Look for cracks and small chunks missing.

 

But its only like 2 or 3 months old

 

You just had the belt replaced 2-3 months ago? Then it wasn't tensioned down enough. Give the belt tensioner pulley bolt another 1/4 or 1/2 turn. There's a write up some where to check belt deflection. There's also a tool for it.

 

Check belt tension-if OK, remove the belt and spin all pulleys by hand and feel for excess drag. If not enough tension on belt-replace the tensioner.

 

Did you buy a cheap belt....need a good polycog ...Gatorback...a new cheap belt will not last.

 

It was a gates

 

got something similar happening. mine sounds like its coming from the power steering pump. replace the belt with a gatorback. it started after my timing chains were done

 

Would a muffler cause any kind of squeeling? It's gotten to where if I tap the gas it does it also