Air Conditioning Problem

[mik23]

Gents

Problem : AC is not blowing cold air

AC lights on

Blower fan working setting 1 2 3 4 all different speed

Visually checked compressor at the belt / pulleys

Cabin filtre replaced (blower motor is under this)

Can anyone suggest any other thing I need to check

[WeeYari]

Probably best to take it to the shop. You've either got a leak and the system is out of or low on refrigerant, or the compressor is shot.

[tarkus]

You've either got a leak and the system is out of or low on refrigerant..
My money is on this one



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[mik23]

I think i am in agreement with u its low on refrigerant.

[WeeYari]

Could also be, but probably not, a failure in the coolant line pressure sensor. If this sensor has failed, or is sending a low pressure signal, the compressor will not kick in.

[mik23]

Can u pls upload a pic where it is how can i check

[mik23]

Update

Recharge the gas and its now ok.

Thanks All

[ex-x-fire]

Where's it leaking from?

[mik23]

Mech said no leaks

[bronsin]

Uh oh you might have the problem all over again if the lack of fluid was because of a leak.

[mik23]

All over ?

[mik23]

Car req recharge every 2-3 year

[bronsin]

Really? My car is 7 years old and my wife's is nearly 12 years old and the ac works and has never been recharged.

[mik23]

...

[mik23]

Air Conditioning Re-Gas

It is recommended that you should recharge your air conditioning system every 2 years with gas and lubricant, in order to keep it running efficiently. This is not included as part of a routine car service and so it can often be overlooked. If your car is more than 2 years old it is more than likely due a re-gas.

This service ensures that your air conditioning system is working efficiently by testing the gas pressure to see if it has dropped. A drop in gas pressure will result in a loss of cooling efficiency which will make your engine work harder and in turn use more fuel.

Due to it's dehumidifying properties, when operating fully efficiently, your air conditioning system will also de-mist your windscreen more rapidly in cold weather.
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[mik23]

Now thats my understanding

[mik23]

Happy to correct myself

[ex-x-fire]

Mech said no leaks

Yes, you have a leak. Hopefully he put some dye in it to find it with a UV light. They even have leak detectors that can smell where the leak is.

[mik23]

Update

you r right

there is a leak I tried to turn on AC today and no cold air. I dont know what happens but it seems the mechanic was lying that there is no leak.

Now, I am unsure how / where / to test the system / leaks

[bronsin]

First get another mechanic and explain what the last one did!

Fro m what u learned here the new guy needs to put dye in the system to spot the leak right?

[mik23]

I am thinking to go and speak with him why he lied

[mik23]

I think he used a big machine with dye in it and looked with uv and confirmed no leaks

[CTScott]

I think he used a big machine with dye in it and looked with uv and confirmed no leaks

Besides a leak, if the pressure sensor is bad, the system will also not run. If the mechanic has a Toyota specific electronic test tool he can read the codes and signal outputs from the AC ECU (this can not be done with a generic code reader)

[mik23]

I dont think he checked the pressure sensor is that something i can check got some tools and multimeter

[WeeYari]

Update

Recharge the gas and its now ok.

Thanks All

According to that post, you were working after a recharge. If that was the case, then the pressure sensor is working.

[mik23]

Gents

Update I have got a minor leak in condenser.

Initally I was told its all ok when I went back they show me the leaks. I said why you regass when there was a leak just to take money. He said you sort out the condenser and I will regass free. I am really disappointed.
Asked him if this is a minor leak can he seal that he replied this will damge the compressor and more faults. he suggested replace the condenser.

moving forward I will not trust any mechanic.

Looking for a used condenser to replace thanks for all it is highly appreciated.

Thinking to replace the conderser by myself then go for free regas.

Any advise would be highly appreciated.

[bronsin]

Can't help with the ac but there are good mechanics out there.

As well as a lot of shady ones.

[mik23]

Gents

I am thinking to try replacing o ring on this. Can any one help what where to change