Question about 2004 Chevrolet Impala

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Odd grinding sound from 2004 Impala (3.4L)

A metallic sound has started coming from the passenger side of the engine. You can only hear it when the car is first accelerating or under load from going up a hill. It sounds like it originates around the tensioner or crankshaft pulleys. I have had the alternator, tensioner and water pump changed. Any ideas on what could be causing it?

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  • Contributor
  • 21 Answers

Check ac clutch you might see metal filings

Posted on Jan 15, 2013

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Loud accelerating whining

THE FAN CLUTCH WILL MAKE A LOUD ROARING NOISE WHEN THE ENGINE IS STARTED AND GET LOUDER AS THE RPM IS RAISED. THERE IS A PROGRAM UPDATE THAT SOMETIMES FIXES THIS PROBLEM. IF NOT THE FAN CLUTCH WILL HAVE TO BE REPLACED AND THE PROGRAM UPDATED.

Posted on May 31, 2009

  • 75 Answers

SOURCE: grinding noise while driving.

Possible causes:

a) a brake disc shield is too close to the disc, and it's coming into contact in the circumstances you outline

b) pebbles stuck between the disc shield and the disk

c) dried out wheel bearings

d) worn Universal Joints in the drive shafts

e) worn A/C pump

f) worn alternator

g) worn water pump

Is the noise still present above 15 miles an hour and past 1500 rpm when the clutch is disengaged (i.e. gearbox in neutral?). The answer to this question may help you to pinpoint the source. I know it's stating the obvious but the fact that you're hearing a grinding sound means it's caused by something that is moving relative to something else. Again this should help narrow down the cause.

Posted on Jun 01, 2009

  • 41 Answers

SOURCE: water sloshing around, I can hear it on the inside

your heater core is partially plugged causing water slush, if you have checked your drain plug on the evaporator heater case outlet and it is not restricted, then that is a major repair.

Posted on Oct 01, 2009

ftw1952
  • 10319 Answers

SOURCE: 1994 Chevy K1500 5.7 liter-

The chirp is from scale or a glaze on one of the pulleys. If not black or shiney in color clean it with brake cleaner and spray some belt dressing on the pulleys

Posted on Apr 01, 2010

  • 180 Answers

SOURCE: My 2004 Chevy Impala 3.8 LS is making a water

It is air pockets in the cooling system.

Posted on Feb 18, 2011

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