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I have the Raheem criterion 2.. the inducer fan make a high pitch sound, almost a whistle..Does that mean that it's about to burn out?

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: High Pitch whine during acceleration

First you need to isolate the noise. You don't mention the mileage on the car. Do you have the supercharged engine? If you do, remove the belt for the super and make sure that is not the problem. If you still hear the noise approximately below or from the super area, it is most likely the belt tensioner pulley.
In my car there was a large washer over the pulley (original equipment), as the pulley wobbled on the bad bearings, it would cause a sound like a bad alternator or gear whine getting exponentially worse the faster the engine reved. Now that the part is replaced, you can barely hear the engine idle and is significantly quieter at high RPM.
My car - 2004 Pontiac Grand Prix GTP with 66,000miles.

Posted on Dec 30, 2008

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SOURCE: high pitch whistling noise in engine compartment of 2005 envoy

There may be a small hole or cut in a vacum line or possibly just loose. Also make sure the air filter box and the big hose to it are secure and clamps etc are tight. Pulleys and belts can make a high pitch sound also.

Posted on Mar 22, 2009

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SOURCE: when i give my car gas a whistle comes from the engine. It's a high pitch continual sound. When i let off the gas the whistle stops. It sounds like it's coming from the top of the block.70k miles Thun

Sounds like a vacume leak, chk. for a cracked or broken vacume line or maybe one came off. Does it idle ruff? With it running open hood and listen for a low pitch whistle you may have to rev it up a little.

Posted on May 31, 2009

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SOURCE: 2004 Jeep Liberty makes high-pitched whistling

with engine off check fan blades and shrould (plastic around fan) for cracks or if loose also check tailpipe bent at end if you backed into something. also check air filter box to make sure its tightly shut.

Posted on Aug 30, 2010

bep86
  • 142 Answers

SOURCE: What causes a high pitched whistling noise when

It could be a number of things, first check if any vacuum lines came off you will get a noise from the air entering the line that has popped off, secondly it could be one of the pulleys having a bad bearing, the belt tensioner pulley the water pump, the alternator....

Posted on Dec 06, 2010

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When i give my car gas a whistle comes from the engine. It's a high pitch continual sound. When i let off the gas the whistle stops. It sounds like it's coming from the top of the block.70k miles...


Sounds like a vacume leak, chk. for a cracked or broken vacume line or maybe one came off. Does it idle ruff? With it running open hood and listen for a low pitch whistle you may have to rev it up a little.

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High pitch whistling noise in engine compartment of 2005 envoy


There may be a small hole or cut in a vacum line or possibly just loose. Also make sure the air filter box and the big hose to it are secure and clamps etc are tight. Pulleys and belts can make a high pitch sound also.

Mar 22, 2009 | GMC Envoy XL Cars & Trucks

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I have the same problem like yours but what i did is to replace the alternator and now its so quite no more high pitched sound. You may used belt stress fluid but its only last for few seconds then sound comes again. I replaced it with refurbish part alternator.My sienna 2005.

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