Question about 2007 Chevrolet Impala

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Rattle noise only when you press on the gas pedal coming from under the hood

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1118 Answers

SOURCE: I have a 1997 S10 pickup. It is a manual

Could be heat shield for cadalitec converter, or inside converter has broken loose, or a hainger for your exhaust has broken.

Posted on Mar 04, 2009

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  • 396 Answers

SOURCE: I drive an '05 chevy trailblazer. I've started

might be a broken exaust gasket

Posted on Oct 28, 2009

  • 174 Answers

SOURCE: high pitch noise coming from under the hood louder

This could be a couple of things. There are bearings in the a/c compressor, alternator and p/s pump. One of these could be going out. There is also a bearing in the belt tensioner and in any idler pulleys connected to that belt setup. Check those first. If that's not it maybe check your fan. There is also a bearing in there.... If it's an electric fan disreguard that part. If it's belt driven see if it spins with the engine off, we don't want to loose any fingers. If the fan clutch is seized up that's an easy fix.

Posted on Nov 10, 2009

Onifade
  • 268 Answers

SOURCE: vibrates when gas pedal pressed.

1. Check the ball-joint.

2. Check the Tye-rods.

3. Your shock absorbers/ struts.

4. Wheel balancing and alignment.

Good luck.

Posted on Dec 14, 2009

  • 740 Answers

SOURCE: rattling noise when i come to a stop

the rattling is most likley a heat sheild that is loose,I see this mostly every day. get some self tapping screws and secure the sheild back in it's place . Don't remove the heat sheild it's there for a reason.

Posted on Feb 09, 2010

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Rattling noise when I press the gas pedal or when the vehicle is running idle.


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Likely an exhaust heat shield. When the SUV is cold - after sitting for 4+ hours - crawl under the vehicle and see if any of the shields are loose that cover the exhaust pipes. If they are you can use sheet metal screws screwed into the shield and against the exhaust pipeto 'wedge' the shield so it doesn't move.

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Rattling behind engine driver side


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Vibration/Rattling on right side during high speeds


I had a similar problem. The dealer change automatic transmission and differential, but the noise continu. After research on internet i think the problem is the front galiper who create a vibration on the disc wheel and the vibration frequence follow the front axle until interior car. Just press slowly the brake pedal and if the noise stop , that's it the cause i think. I dont change my galiper, but i have a new transmission . :)))

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Is this almost like a metallic buzzing sound?

Find the catalytic converter under the car it should have a shield on it. Use a broomstick with the car running and hold the shield still and have someone give it a little gas. Just move from shield to shield until you find the offending shield.

Don't touch these with your hand as they can get hot fast.

Most parts houses sell a very large hose clamp to go around these shield for about $10, they will know exactly what you are looking for.

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GAS PEDAL


Check all the vacuum lines,sounds like one of them has split, or come off. Have somebody press the pedal while your listening under the hood to see if you can find where the air is coming from.
Just press the pedal enough to hear the air.

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