Be aware of Aircon compressor noise

[jliow]

i am available from 2230hrs on weekdays at Punggol....since I have not changed it yet...can actually use my car for comparison....

PM me if you wanna come...

is it a low pitch Hummmmmmmmmmmmmmmmmm also does car vibrate a lot more than it should when the condensor kicks in?

[felixmiao]

the humming sound can be hear during the car is moving or even stand still..is it just start the engine n pop up the bonnet n we can hear the humming sound de...pls advise..coz i also hearing some weird sound like the old bicycle chain without lubricant...kreee kreee kreeeee..during the morning start...or when goes up hill n need to press the gas pedal harder..thanks in advance.

[JLHeng]

i am available from 2230hrs on weekdays at Punggol....since I have not changed it yet...can actually use my car for comparison....

PM me if you wanna come...

Bro, I've PMed you.

[priyana]

I got similar problem last year.
Went to Riverview Auto in AMK, and they confirmed it is the compressor.
Even if you don't turn on your aircon or just in fan mode, the aircon compressor is still being driven, because it shares the same shaft as the alternator and radiator.
I was told that in my case it was likely the ball bearing of the aircon compressor, but you cannot replace just the ball bearing.

If not replaced, it may just failed one day, and the whole shaft will jam, stopping the alternator and radiator. And you car will overheat and without battery.

Riverview charge me around $750 (can't remember the exact).
BTW, it is not true that only TCM has the bracket, pulley, compressor, etc.
Any stockist will have them too.

[Latiorarri]

I got similar problem last year.
Went to Riverview Auto in AMK, and they confirmed it is the compressor.
Even if you don't turn on your aircon or just in fan mode, the aircon compressor is still being driven, because it shares the same shaft as the alternator and radiator.
I was told that in my case it was likely the ball bearing of the aircon compressor, but you cannot replace just the ball bearing.

If not replaced, it may just failed one day, and the whole shaft will jam, stopping the alternator and radiator. And you car will overheat and without battery.

Riverview charge me around $750 (can't remember the exact).
BTW, it is not true that only TCM has the bracket, pulley, compressor, etc.
Any stockist will have them too.

This morning I dropped my wife off to work.. when she got out of the car she ask how come my car got noise.. so i got off to listen... there's this screeching sound coming from the car.. engage (haven move off yet) R, D or L slightly louder. The sound is like what one of the bros describe.. like some rotating part no oil.. and i also notice after 30K servicing, my A/C keep cutting in and out.. even when the temp is set at 28 degree.. when pick up or climbing slope, A/C cut in the car like suddenly rob of power, there will be a noticable but small jerk  wah lau eh...

Is this the same as what is being descibed in this thread?

[priyana]

Mine was a humming sound, no screeching.
But the pitch goes up and and down according to rpm.
Even at neutral, when rev-ing you can hear the hum and its pitch.
At Riverview they use a long socket spanner and touch at each part of the enginee (alternator, compressor,etc), and the other end to the ear or just feeling the vibration.
With that he can tell which part is vibrating the most when rev-ing.

BTW, if you set your aircon at 28 deg, it is quite normal that it cut in and out.
afterall the aircon has to maintain the "warm" you set.
You should be setting it at 24 or below.

[Latiorarri]

Mine was a humming sound, no screeching.
But the pitch goes up and and down according to rpm.
Even at neutral, when rev-ing you can hear the hum and its pitch.
At Riverview they use a long socket spanner and touch at each part of the enginee (alternator, compressor,etc), and the other end to the ear or just feeling the vibration.
With that he can tell which part is vibrating the most when rev-ing.

BTW, if you set your aircon at 28 deg, it is quite normal that it cut in and out.
afterall the aircon has to maintain the "warm" you set.
You should be setting it at 24 or below.

Oh okok.. lunch time i will drive out again see if i can narrow down the source of the sound.. i tried setting at 21 also like that.. this happened after my ambinet temperature sensor was replaced.

[DL70]

can be due to aircon filter (condensor choke). replace the condensor, around $50 I think, and not the compressor...:)

[Enzoni]

when aircon compressor up lorry, u can hear an unique sound which u dun normally hear when driving.  Sounds abit like air suction.  Can hear when u step on gas or brake.  But when u off compressor by pressing A/C button, the sound immediately gone.

The high pitch screeching sound which u hear very loud when out of car but not when driving is the fan belt problem.

The hissing sound like air leaking can be cooling coil leaking or not enough aircon gas.

[row21]

Hey Enzoni,

high pitch screeching sound - i only hear it when i start my engine... after 5 mins.. the sound gone... tat aso fan belt problem?

[Enzoni]

Hey Enzoni,

high pitch screeching sound - i only hear it when i start my engine... after 5 mins.. the sound gone... tat aso fan belt problem?

yup, when u drive out of carpark u see people looking at ur car like u are driving some supercar...  Very loud n irritating sound but u cant really hear it if u close ur window n on radio due to our good sound insulation.

It will go away after car is warmed up, but dun ignore it. The belt got cracks liao...

Always investigate if there is some funny sound that u dun normally hear, surely somewhere got problem.

[row21]

Enzoni, thanks for the advise

Any one got any idea about how much it cost to change a fan belt?

[dc100]

guys i just changed my ac compressor. cos i drive to JB come back twice the aircon not cold...but the compressor and fan still run. Brought to Mark cool to change... very reasonable, only $630... go there my frens... somemore done in 2 hours! quick job

[swarovski latio]

aiyah should look for me .... using sanden new comppressor...still around 500

[sunnyong]

Enzoni, thanks for the advise

Any one got any idea about how much it cost to change a fan belt?

fan belt plus labour shd be around 60-80