I have an issue with my S Spec Vios year 2008.
Was driving and revving more than usual just now, suddenly my air cond stops having cold air, something like the compressor is gone, but fan speed maintains. Got a shock and quickly turn off the air cond and restart. The cold air came back and function like usual. Puzzles me, what is happening? A/C clutch?

If your aircon system is Denso, best you take it to your nearest Denso service center and have it competently diagnosed. It could be anything from sudden gas leakage, electrical faults to cooling coil faults or some vital component failure causing malfunction. The cooling refrigeration can stop working from any of these faults but the blower fan will still continue to blow. Have it checked up and replace with original parts, nothing less.

http://www.denso.com.my/content/service-dealers.php

This post has been edited by bsl555: Jun 5 2015, 11:17 PM

Better service now than wait till recur is it? Usually how long service once

Most likely the clutch. Happened to me once before, rushing to the airport and the same thing happened when hard accelation to overtake.

But my case is worse, the clutch totally gone and need to spend a couple of hundred RMs to have it changed.

If nothing done since 2008 and you use your car everyday, the fan coil need to be washed down. All air conditioning system, whether home air con or refrigerator work on the same balanced refrigeration principles and fundamentals. Only a different refrigerant gas maybe different application, the working principles are the same and have not changed. Any inefficiency in major component like cooling coil, condensor coil or compressor will result in malfunction or reduced cooling effect.
In cars, the cooling coil (evaporator coil) is the 1st thing to be contaminated in due course and need a total wash down and a check for leaks. Its often thought that when cooling efficiency is reduced, there's a lack of refrigerant gas. The gas is within a sealed system and should never leak unless there's a hole or mechanical leakage somewhere in the cycling system (piping, coils and compressor) whereby there's sensors and system protection will kick in and shut it down to prevent any untold damage. Of course other electrical components may fail, it could be anything within the cooling system, its known to happen but rare.
Ok..go get it diagnosed and they may advise you for a total service if it warrants it.
Good luck!

This post has been edited by bsl555: Jun 6 2015, 12:08 AM

If you change the compressor clutch, most people will change the compressor magnet as well since you already tear down the compressor. It is a wear and tear item. Besides that if you dismantle the compressor from the car each time, definitely you must refill back the gas. Why want do double work, double labour charge ?

hmm should I just wait for symptom to reoccur first to confirm before sending?
roughly how much will it be?
if I send to Denso authorized workshops should be alright right. think service center will be expensive

Have U ever service ur aircon system.. Same model vios user here.. I'm regularly service my aircon system at least once 2 years.. So far so good..

Rm220 for it service coz it doesn't need to dissemble the whole thing, just change it oil and gas.. But takes time too, coz process to replaced the oil..

Never before...haha...maybe try service first if recurrence problem only change

ahaks.. yup.. try that 1st..

thx bro....not really arif regarding air conds....happened once only...if change macam sakit hati pula...and also there are ppl who told me, belum rosak, guna dulu la

its ok.. i'm just sharing what i know.. tiny bit only
last time my vios no issue with aircon system.. just send for checking, the mech said all is good.. still i do it coz need to take care that compressor.. if it faulty then headache la

Magnetic clutch saying bye bye to you with its last breath.

Just wait for that one day when you off your air cond and turn back on and cold air never came back.

It is very normal if you rev crazily. Tip: next time turn off your aircon temporary when you 6000rpm so often, turn it on when you had accelerate enough and back to cruising rpm.

Just that 1 single time bro... working night day before..So drove a bit a tad agressive uphill..does that mean it was already dying and revving just exposed it or it was that revving that spoils it.. what shall I do now...wait for it to break down before changing? Or service air cond now owat..coz now functioning well pulak

Anyway can't be auto ac cut off? Coz some cars when u floor it, ac will be offed temporary

Rev definitely kills it. Or rather.. damages it. The engagement/disengagement of that clutch will introduce some damage. The higher rpm the higher the damage.

Service aircon will just usually change the oil & gas and not touching anything else much (maybe washing the cooling coil and changing the dryer that is, some even take out the blower to wash). Magnetic clutch is just replaced when totally dead.

I rev occasionally but there is one month that I rev so often that... in that month my magnetic clutch failed totally. The behavior is the same, hot air, turn off and on, then cold air back. Then it is normal for some short while, I continue rev habit and same behavior repeat. Until one rev that the aircon never cold air anymore (no more 'tak' sound for that compressor engagement).

I believe the a/c was never off at all when I rev. Otherwise I will be feeling hot air in an instant.

Now that sounds scary bro...seems same as mine..just that 1 rev kills it...dun think even reach red line probably 6th rpm only going uphill..
where u change it and how much ya...I'm from kl working in sabah now...if wanna change dunno go school or denso published service center..just wanna know price be for kena potong