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1996 Toyota 4runner whining noise

1996 4runner 6cyl auto. Whining noise when put into reverse or drive. Does not happen in park or neutral. As you accelerate, you hear the whine as it goes through the gears and seems to quiet down some once up to speed and the rpm's drop but doesn't go away completely. It does not seem to effect performance, the truck runs fine. Tranny fluid and filter are fine. Tranny guy thinks it may be the torque converter but wasn't positive. Didn't feel like gambling $1600 to see if he was right. Any chance this could be a U-joint grease issue or alternator issue?

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SOURCE: whining noise on acceleration

could be it is low on transmission fluid, check this first then get back to me. if it is ok we'll look at some other common problems. please rate my fix as i strive to be the best,please do not leave negative revue,get back to me and we'll work on it

Posted on May 02, 2009

  • 1596 Answers

SOURCE: A high pitched whining noise in the engine.

This Noise Description sounds Indicative of the Sounds that come from the Serpentine Belt Or Related parts such as Belt Idler Pulley or Belt Tentioner witch also has a Pulley, but if Tensioner itself is Literally BROKE I've replaced a number like this it will cause a Whining noise . Best case scenario its just the Belt, and if any of the other Problems turn out to be the Culprit the Belt MUST be Replaced Anyhow as Damage is Being caused By the Very Whining you hear.
PLEASE Spend the Extras $ for the BEST BELT as this Drives your Water pump, Alternator, A/C Compressor, Power Steering Pump All Crucial to Control of, easy Steering ,All Electrical-Power Distribution, The COOLING of Engine << VERY CRITICAL Component
The Pulleys usually have a more Hum type Whining. So I would say at Best The BELT , And WORST Belt Tentioner is Broke

Posted on Jan 14, 2009

  • 2 Answers

SOURCE: clutch (I think) whines when in neutral & clutch engaged

it sounds like the thrust bearing in worn with no load you can hear the wear or play in the bearing

Posted on Mar 20, 2009

Molson02536
  • 3854 Answers

SOURCE: whining engine

It could be a pully bearing going bad, or your power stearing pump. next time you start it when it's cold try moving your steering wheel left to righ and see if there is any changes. The next time try removing your belt before you start it and see if the noise goes away. The belt could be warn out and hard itll it warms up and soften up. Start with a new belt. Good luck

Posted on Apr 06, 2009

  • 2 Answers

SOURCE: silverado 4.8 liter engine makes a whining noise.

Back pressure from a clogged catalytic converter can also cause this problem.

Posted on May 24, 2009

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A common cause of a whining or buzzing type noise when not in gear (neutral and park) is a WORN PUMP in the transmission. How many miles are on the car??

A noisy pump is just noisy and won't cause a breakdown until it becomes MUCH louder. If the noise is not that loud at this point, just keep driving it for now, and chalk it up to normal wear & tear. But DOOO make sure your transmission fluid is topped off. The amount of fluid between the LOW and FULL marks is about one pint. DON'T overfill OR allow it to get below the LOW mark. Transmissions are VERY fluid-level-sensitive.

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Start car and use a stethoscope.
Start car put car in park and and listen for the noise by placing the scope on any item you believe the noise is coming from. if this does not help you confirm where the noise is coming from do the following:
Do you still hear whinning? put car in park after start up and listen for noise.Do the same in neutral. What do you hear? Drive vehicle in all gears. If you hear whinning in all gears its the oil pump inside the converter. Have this verified by a transmission repair shop.

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I have a 2002 buick rendezvous. When i put the car in Reverse, Drive, 3, 2, and 1 it makes a whining noise. When i give it has the noise increases?


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1 Answer

Whining noise


Can you make the noise happen with your foot on the brake, trans in gear, and a little throttle? And does it go away in park & neutral? If yes to both questions you probably have a faulty thrust bearing in the torque convertor. If no to both questions you like have a faulty "input drum to pump cover thrust bearing." Either way the problem must be repaired ASAP or when the bearing fails it will be at the worst possible time, like in the middle of an intersection with a firetruck bearing down on you.

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