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Whistling/squeaking At Idle ?

WogsRus

By WogsRus,
in Engines & Forced Induction

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WogsRus Veteran

WogsRus

Posted
Posted

Hi all

I have a strange whistle/Squeak at idle in my car. It is constant, and as soon as i blimp the throttle it disapears. Only occrs after the car has warmed up. I have all new gaskets and studs exhaust side.

It is hard to see where the noise is coming from, and as you turn the car off, it dies down with the engine.

No recently i cleaned my TB, and Cold start valve, and have since look at these again, but i cant find any issues with these. The engine hasn't lost Vaccuume, and still dirves fine.

Is it possible that it is a whistle from the TB or something similar.

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https://www.sau.com.au/forums/topic/162821-whistlingsqueaking-at-idle/
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sky-017 Proficient

sky-017

Posted
Posted

i have the exact same problem = and the same symptoms . the it is really hard to diagnose where it is comming from . sounded like any air leak at 1st, but then it changes tone a bit . my car has been sitting for a few months with out more than a 100 meter drive which iv done like once ever few weeks.....

if i knew where it could be from id be looking for ways to fix , iv just given up.

rgr34 Proficient

rgr34

Posted
Posted

i have the same squeek at idle goes away while driving..... not sure if its the belts or what.... sounds real dodgy when idleing and gets louder when its hot and been driven for a while.....could it be the cooling fan bearings?

  • 2 months later...
negoshi8or Enthusiast

negoshi8or

Posted
Posted

Check all three belt tensions first - make sure they are not loose.

I suspect the sound is coming from the bearings on the air con compressor pully - the one on the compressor - not the tensioner pulley.

I had a noise I couldn't identify - I just got a new water pump fitted so it wasnt the issue.

So I took off the power steering pump belt and the noise was still there.

Then I took of the aircon belt and presto - the noise was gone!!

I rotated the pulley on the air con compressor by hand and it was extremely noisey - you could feel the "roughness" when rotating the pully.

Try it yourself and see.

The CAS noise sounds like a rerw rew rew rew rew.

The air con pulley noise is more like a metal squealing or squeaking - and is constant. Not pulsing like the rerw rerw rerw of the CAS

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