Squeeling coming from under right side of hood of car have had pulley,belt and tensioner replaced noise is still.

The squeel you hear is most likely related to the braking system of your car. This is typically caused by a wear indicator attached to the brake pads that once the wear limit is reached it contacts the rotor (that spins with the wheel) and a squeeling noise is heard. It can also come from a brake caliper that is not properly "floating" (the calipers float side to side to allow for even pad wear) and causing excessive wear on one pad, again causing the wear indicator to engage. There are also a few lessor probable causes for this annoying noise, but the bottom line is you need to have your brakes checked right away. Best wishes!

im having a similar problem with my lincoln where is the sound coming from is it happening while under load meaning while driving rpm higher then 1500 or all the time is sound coming from right side or left side. i believe on mine its a torque converter im looking at it on my lift this weekend to confirm you may email me any other details at [email protected]

Still sounds like the belts, not much will cause that type of noise. You can completely remove all belts and start engine to see if noise is still there, no harm to engine to run it for a minute or two with no belts. You will know for sure then.

I am not a big fan of belt dressing ... especially when you are not sure if the problem is a:

1. dirty belt ... or
2. dirty pulley ... or
3. bad bearing on a pulley (idler, tension, A/C, alt, PS)

If you are at all handy I would take the serpentine belt off and check it's condition. How to change the serpinetine belt on 97 saturn sl2 do we have to change...
Which pulley got replaced? the idler (on top) or the tensioner (lower down)? Usually the idler or tensioner go first before an equipment pulley on the alt or A/C or power steering units.

Loose belt, sometimes a blown tensioner will not apply enough pressure to the belt so it will slip causeing the noise

The pulley youll need to replace is called a pulley tensioner,it comes with a automatic tensioner and a pulley all in one unit, when this tensioner wears the drive belt can no longer maintain a correct tension, when tensions are loose a belt noise develops as high RPM are achieved you develop a squeeling noise even at start up. Failure to replace a worn tension developts a glaze on the drive belt thus wearing it out quicker,by all practical means if you reuse the same belt the rotation must be followed,drive belt being rubber in nature developts conicity and fail if rotation is not maintain,so it always a good idea to replace the drive belt when you replace the pulley tensioner

These vehicles are known to have power steering issues. They use up fluid and at about a 100k or so the pulley itself can "sheer" right off. I would check your power steering fluid level and go from there.
Thank you,
Lee

It's a loose belt for sure.

If you have a spring loaded tensioner, and the belt has stretched with time, the tensioner will reach the limits of its travel without tensioning the belt enough to prevent that squeal.

If it has an adjustable tensioner, tighten the belt up.

It sounds like you have a worn or streched belt making the sqeeling noise. Whenever you turn on a
device in the car that draws a fair amount of voltage
ie. a/c or headlights it will cause increased drag on
the alternator and if you have a loose/worn or glazed
belt, it can slip around the pully making the squeel.
To adjust the alt-a/c belt loosen the mounting bolts
on the tensioner, then use the adjuster bolt behind
the tensioner pully to loosen and tighten the belt.
Be sure to check the belt for cracks bald spots etc.
While the belt is loose spin the pullys to make sure
they all spin freely. Also I would replace the belt just
to be sure. Hope this helps

Normally a squealing noise like that _is_ the fan belt. It will certainly be one of the belts, check all your belts for wear and tension, replace/re-tension as necessary.