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check for loose altenator belt. also check fluid level in the brake master cylinder. you can have the battery checked for free at any autozone or advance auto parts store. they can also check for bad altenator. don't be mislead by someone who is only out for money! have them checked please. the altenator belt only may be needed tightened! do not be a victim. have it checked for free. hope this helps and if you need further assistance please repost your question to fixya.com
Having someone pry up while you tighten at least one bolt to secure is very helpful. The screech is most likely due to a loose belt. You don't want it super tight,however there should be approx. a 1/4 in deflection when you press down on the belt when tightened.
WARNING: USE CAUTION WHEN REMOVING OR INSTALLING DRIVE BELT TO MAKE SURE THAT TOOL DOES NOT SLIP.
Using a 15 mm socket or wrench attached on drive belt tensioner pulley bolt. Rotate drive belt tensioner (6B209) clockwise to remove drive belt from pulleys.
Pulley Routing, Accessory Drive Belt—3.0L Engine
Drive Belt Tensioner Pulley
Drive Belt Tensioner
Power Steering Pump Pulley
Water Pump Pulley
Install drive belt over all accessory pulleys (except drive belt tensioner ).
Rotate drive belt tensioner as described under Removal to install drive belt over drive belt tensioner pulley. Make sure that all V-grooves make proper contact with pulleys.
its not hard to replace an alternator,,,there are 2 bolts that hold it in place that you have to take out.make sure you take the pos battery cable loose so you dont short anything out , once you remove the bolts he alternator will move freely there is a wiring harness hooked to the back of it that you have to take loose and then you can pull the alternator off the try.you put it back the same way you took the old one off and when you go to tighten the belt you need a prybar to apply tension against the alternator and then as you keep that tension on therer you tighten the golts to keep the belt tight. thats about all there is to it
I believe this car has a sliding alternator for putting tension on the belt. There should a bracket above the alternator with a bolt that goes through it and the alternator, loosen this bolt first. Next there should be a pivot bolt on the bottom of the alternator which when loosened you can tilt the alternator back adding tension to the belt. When you have it tilted back far enough just tighten up the bolts without releasing the alternator til the bolts are tightened up all the way. You may need a long pry bar such as the tire wrench to add a little extra tension that you just can't get by hand tightening. Hope this helps you.
It's actually super easy.
All you need is your year and make alternator belt and a wrench.
Take off the existing altenator, take off the old belt.
Once the altenator is off you'll be able to look further down below where the altenator was. You'll see a metal wheel that's a little bigger than the one on the altenator. This is where the new belt needs to wrap around.
I found it alot easier to wrap the belts around the two wheels before putting the altenator back on the engine.
Make sure that all bolts and seals are sound. (that's the last thing you need falling off in the middle of nowhere!)
Hope it helped!