Question about 1993 Mercury Sable

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My serpentine belt has about 2inch's of slack in it. Why?

I've changed the belt tensioner and it's still loose. Is it possible that the belt I have is the wrong size belt?

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Posted on Feb 10, 2009

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Wrong size belt is a possiblity or the tensioner pulley was installed incorrectly alot of time what people dont understand is that before u remove a belt you ned to measure the tension before loosening pully because that is going to be your stepping stone for new installation if the tensions are not exact it can throw off the tension causeing dammage to the pulley system make sure your belt tensioner is correct and is tensioned to the proper plbs by either your locl autoparts store or your owners manual

Posted on Feb 10, 2009

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This is how it should be routed if you have the 3.0L engine. Give me the number off of your belt and I can tell you if it is the right one.
my serpentine belt has about 2inch's of slack in i - 293062d.png

Posted on Feb 10, 2009

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How do you get serpentine belt off?

Hope this helps:

Removal & Installation
  1. Remove the air cleaner outlet pipe.
  2. Rotate the drive belt tensioner clockwise and remove the drive belt.


Rotate the drive belt tensioner clockwise and remove the drive belt

To install:

  1. Installation is the reverse of the removal procedure. Make sure the belt is routed properly


Accessory serpentine belt routing-Ford 4.6L, 5.4L, and 6.8L engines with A/C


Accessory serpentine belt routing-Ford 4.6L, 5.4L, and 6.8L engines without A/C

Please let me know if it's diesel because the routing is different.

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When I turn my van on it squeals very loudly and it gets worse when you press the gas. What could it be?

You could have a bad or worn serpintine belt. When you replace it make sure all the pulleys are rotating freelyi.e. air compressor, alternator, tensioner idler & power steering pullies to make sure all of their bearings are running freely. Good luck!

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How do I release the tension on the serpentine belt for replacement.

Turn the bolt on the tensioner counterclockwise.

Use a wrench on the bolt. Slowly turn counterclockwise until there is enough slack to remove the belt. Hold in that position (if you let go the tensioner will automatically apply tension again). Remove the belt.

Do not fully remove the bolt as the tensioner will come apart. Just release the tension to the point where the belt is loose.

Simple job.

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Crank the tensioner to get some slack in the belt and slide it off the uppermost, most easily accessible pulley. Remove the old belt. Route the new belt in accordance with the belt routing diagram and crank the tensioner the same direction as before to begin getting the belt over the uppermost pulley. Slide a screwdriver under the belt and over the pulley to leverage the new belt on. Release the tensioner and check for belt tautness. If the belt is loose, you've either purchased the wrong size or have misrouted the serpentine belt.

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normally you can take a 1/2inch breaker bar and insert it in the hole on the tensioner pull down and take the belt off the alternator and also try to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

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