Squeaking from underneath car

[Valkyrie]

https://www.youtube.com/watch?v=MBnBRnzCFwE&feature=youtu.be

Awful squeaking when sitting idle. It's coming from under the carr, not a fan belt ext. Only starts after driving for a tiny bit not after start up.

1998 Standard Sr5.

 

[White 4x4runner]

https://www.youtube.com/watch?v=MBnBRnzCFwE&feature=youtu.be

Awful squeaking when sitting idle. It's coming from under the carr, not a fan belt ext. Only starts after driving for a tiny bit not after start up.

1998 Standard Sr5.

Think about it....if it isn't a belt could it be a bearing?

 

[JRZEE2000TR4LTD]

From underneath - front of truck I would think, not the middle or rear correct? Assuming this and it's not a belt, could be one of the idler pulleys for the timing belt, the bracket bearing for the fan clutch, or possibly any of the non serviceable bearing in any of the accessories (alternator, PS pump, or AC clutch) May have to get creative to isolate these by removing drive belts or getting one of those mechanics stethoscopes. How did you determine it wasn't a belt?