Question about 1996 Nissan Sentra

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Squeaking sound during idle engine. Goes away as engine accelerat

Hello all you experts out there,

My Nissan Sentra '96 GXE is making a squeaking noise while the engine is on and idle. As I press the accelerator it goes away and then comes back when I take the feet off. Under the hood I can tell it is comming from the passenger side where there is the cluster of pulleys. Now, where should I start?. Easy one would be idler and then alternator and so forth. I put in a brand new alternator two years ago. What do you guys think could be the problem?.

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  • 2 more comments 
  • Kalpesh Gandhi Mar 03, 2009

    Nissan sentra has a timing chain and fans have individual motors not belt driven

  • Kalpesh Gandhi Mar 03, 2009

    the idler pulley is the tensioner and is not spring loaded..it is adjusted by a threaded bolt

  • Kalpesh Gandhi Mar 03, 2009

    The noise is only the engine is idle (no foot on the gas pedal). As soon as it revs up the noise goes away. I feels as if something is running dry. while the car is in motion without any acceleration the noise still stays no matter what the position of steering. Do you think a mechanic stetoscope might work instead of hose?. it also seem like when there is tension on the belt or pulley, nose goes away. I checked the AC on an off, it doesn't matter...it's there.

  • Kalpesh Gandhi Mar 03, 2009

    Hi there,

    I am going to try what you said and see if goes away. Thanks for putting the answer together.

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10 Answers

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  • 149 Answers

It could be a couple of things.
Check your temerature guage. If it looks odd then it could be the water pump. If it is not that the next thing to check would be the tension pulley. Remove the belt and spin the pulley.

Posted on Mar 03, 2009

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  • 289 Answers

Hi..you need to replace your pvc valve.Replacing
it will solve the problem of squeaking noise.
try this out..
thank u..

Posted on Mar 03, 2009

  • Hariharanath V Mar 03, 2009

    hi..possibly low oil pressure, the tapping may be

    coming from the oil operated hydraulic lifters.
    check this out..

    thanks..

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Go to autozone and check the current coming from alternator to battery. The sound might be a sign of worn alternator. If you have enough current check the serpentine belt for cracks and roughness or you can do it first. It it is worn cracked replace it. If not check the pulleys for AC, Alt, pump by putting white color on it (use pies of chalk). Start the engine open the hood and ask some one to puch gas. If puklleys are fine you would se even white color around of them. If nor you will see flushiung assosiated with noise increase. The pulley which is flashes most is defective (bearing needs to be changed)
good luck

Posted on Mar 02, 2009

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You need to put the serpentine belt in tension by moving the tensioner arm , and putting the pulley at the end of the arm, and belt in tension.

Posted on Mar 02, 2009

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  • Nissan Master
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U will need to remove the belt and check all the pulleys for worn bearing and excessive play, if the pulley moves up and down/side to side even a little from a worn bearing then the belt goes slightly out of line and will chirp or squeak, U also didn't say when the last time you had the belt replaced. the most common area's of wear are the idler pulley's and the automatic belt tension-er pulley, 99% of the time that is wear the problem with worn bearing is.

Posted on Mar 02, 2009

  • yadayada
    yadayada Mar 02, 2009


    Expert ginko what kind of solution is this?? the belt has an automatic tensioner.

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Hi there.
Check the timing belt and the fan belt for ware and tare, its one of these which is causing the squeaking noise while the engine is idling.

Good luck and thanks for using Fixya!!!

Posted on Mar 02, 2009

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  • 95 Answers

Hello,

This is a common issue with cars that have a wide flat belt as the engine belt.

90% of the time this is a cause of a squeaky serpentine belt or engine belt. Sometimes people try to put a spray to stop the squeak but that does not last long and makes the belt skicky.
The belt is around $30-50 dollars and labor will vary, depending on the configuration of the belt might run you $150-300.

The low cause could be a squeaky pulley bearing which will need to be replaced.

If you are a do it yourselfer, I will explain later.

E

Posted on Mar 02, 2009

  • Eric  Kirkhuff
    Eric Kirkhuff Mar 02, 2009

    You have to replace your Serpentine or wide belt. Do not try using sprays to make it go away, it will come back.

    I think it is less likely to be a pulley as you would hear the sqeak more if it was at a higher rpm.

    The belt is around $30 bucks and replacement can be around $150-300 for labor.

    As a do it yourselfer, you can use a serpentine tension remover for like 30 bucks and remove the belt. Get a manual or look one over at autozone.com.

    Sometimes it is easy but make sure that you take a picture of the layout of the belt or it could turn into a nightmare.
    E

  • Eric  Kirkhuff
    Eric Kirkhuff Mar 03, 2009

    Hey Experts, thank you for the correction. I did not know that about this model.
    One think for sure it is a speed problem and with a good ear and someone at the gas pedal, you should be able to get a pretty close idea of what is making the sound.


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This may be a tension issue. i would check the tension by pulling gently on the belts to test for looseness. the alternator belt will become lose at times during cold weather if the tension isn't set to specs. next, i would check the power steering assembly to see if there's looseness there as well. i suspect a malfunctioning pulley.

Posted on Mar 02, 2009

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Hello, you can take a piece of heater hose about 5/8 inch size and make it about three to three and a half feet long. Put one end to your ear the other end move it around the front of the engine with it running , until you hear the noise the loudest. Its probably going to be bearings in the air conditioner, or either the power steering pulley. It may also be you need a new belt. The hose will help you. Please rate my answer, Thank you.

Posted on Mar 02, 2009

  • suterman
    suterman Mar 02, 2009

    Hello, just so you know your car has three belts if it has air conditioning , and two if it doesn't. Your car also doesn't have timing belt. If you use the hose like I told you to you will find the fault. If it usually squeaks reved up have someone to get in the car. If it is power steering hold the steering wheel completely one way ifit squeals you know its the power steering. If its the a/c turn the a/c on, or the alternator turn on all lights. Please rate this answer, thank you.

  • suterman
    suterman Mar 02, 2009

    You may want to replace all three belts if it has been 2-4 years or 70,000 miles since you have replaced the belts. If you have to change the inside belt you will have to take all three off anyway.They are not fun to put on on the side of the road, or in a hurry. The belts dont wear out as fast as the old ones but they seem to make more noise especially if they are cracked or loose.You can also check the tension. The belts may be loose. Pull on the belts if they move more than a inch with about 25 pounds of pressure they are too looose.Please rate this answer, Thank you.

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You have a worn belt (or mis-tensioned).
Try increasing the tension on each belt, and adding some belt dressing.
There is a tensioner gauge, but if you dont have one, a good rule of thumb is approximately 1/4" deflection.

Thanks for using FixYa - a FixYa rating is appreciated!!

Posted on Mar 02, 2009

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