Question about 1994 Isuzu Trooper

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I'm attempting to replace the serpentine belt on my 2000 Isuzu Trooper, but am not able to create enough slack in the belt by loosing the tensioner to slip belt on. I don't want to pry the belt on. Any suggestions?

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Tensioner usually has a bolt in the center of the pulley wheel that is 17 to 19mm. use a breaker bar and socket to hold pulley back (sometimes has a lock that you can engage) then you can move the belt into and out of the pulleys.
have the new belt ready after you pull the old one, put it around all BUT the tensioner pulley and it will be MUCH easier to put on if you are by yourself>

Posted on Feb 24, 2009


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The serpentine belt on a 2.4L is VERY loose after alternator replacement. Can I tighten it or is the tensioner or belt dead?

I think you are on the right track, suspecting the tensioner. It should spring back after you release it. There is a pretty heavy spring inside, it may have broken.

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What tool do I need to replace serpentine belt on a 98 isuzu trooper?

This is no job for a novice. Take it to somebody that knows about these. NOT a simple job. You will need to replace water pump and tensioner also.

Mar 04, 2011 | 1998 Isuzu Trooper

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Which pulley is the idler pulley on a 2001 isuzu trooper 3.5L,DOHC motor?

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Jan 31, 2011 | 2001 Isuzu Trooper

1 Answer

Squeeling when starting.lasts about 30 sec.has 2 belts 1 small w/tensioner,1 lg serpentine can't find tensioner for it. where is it ?

Sounds like your serpentine belt has become stretched over time and needs to be replaced. One of the pulleys is going to be spring loaded and placing a wrench on it and pushing or pulling(gently but firmly) will give you the direction to loosen it off. This belt tensioner is non adjustable .It either tightens the belt enough or it doesn't hence the squeal.Good luck.

Oct 18, 2010 | 1995 Isuzu Trooper

1 Answer

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.

Mar 07, 2010 | 1996 Chevrolet Cavalier

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Serpentine belt too tight to install

I had the same problem when trying to replace the serpentine belt on my 2001 Trooper. The Maintenance book was very vague and I couldn't tell exactly how the tension was taken off the belt, but it did clearly identify the tensioner pulley. I first removed the pulley and looked for some kind of slot that would give me the adjustment I needed, but no slotted adjustment is present on the 01 Trooper. I had to do some research so I pulled of the tensioner assembly and found that there is a spring coil which keeps tension on the belt constant, and eliminates any belt alignment problems.

The Litens style tensioner uses a spring to apply pressure towards the serpentine belt. The way to relax the spring is to use your 14mm socket and ratchet and force the pulley down by driving the pulley nut in the clockwise direction. This forces the spring to compress and the pulley to drop giving the needed clearance to get your new belt in place.

Feb 22, 2009 | 2000 Isuzu Trooper

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