Aircon cutting out

[nos4ra2]

My aircon is working fine when I start the car, but the last 2 days (since it's been really hot) when the engine warms up it cuts out.

Anyone got any ideas?

[BUSHWHACKER]

Low on gas?
Can you see bubbles rushing past the small sight glass on the receiver/dryer behind the grille when the A/C is working?

[Ace Piker]

My aircon is working fine when I start the car, but the last 2 days (since it's been really hot) when the engine warms up it cuts out.

Anyone got any ideas?

Swapsy! I can't switch mine over to just fresh air.

[nos4ra2]

Low on gas?
Can you see bubbles rushing past the small sight glass on the receiver/dryer behind the grille when the A/C is working?

I'll have a look-cheers!

[shokenore]

As Bushwhacker has already mentioned look for a stream of bubbles in the sightglass.
If it is really low on gas you will be able to see the compressor clutch spinning then stopping.

[Wolfracer]

As Bushwhacker has already mentioned look for a stream of bubbles in the sightglass.
If it is really low on gas you will be able to see the compressor clutch spinning then stopping.

Does the compressor work continuously given ideal pressure?
I've had mine filled to 700g - same as a Landcruiser and its working fine, but I have noticed the clutch slowing... maybe jjust a belt issue, but if you know what these should take, I 'd be interested.
BTW it was emptied and vacuum tested before the 700g of gas were added. (K*ikF*t type garage)

[shokenore]

The "correct" gas charge is 700grms +/-50 grms (see below)
Depending on the exact year you could have originally had a system on either R12 or R134a.
My truck had a R12 system with mineral oil.
I have drained and flushed and cleaned this system and it is now running on R134a and synthetic oil the system has been in operation like this for the last 5 odd years.
Although the refrigerants do not matter the lubricating oil for the compressor does either mineral or synthetic and not a mix of them.

The precise amount of refrigerant is not important as factors like a choked or mud encrusted condensor will effect the performance what is more important especially for the life of the compressor is the correct gas/oil is used.

I would hope that the drive belt is slipping if not you could be looking at the compressor starting to nip up/sieze.

[Wolfracer]

The "correct" gas charge is 700grms +/-50 grms (see below)
Depending on the exact year you could have originally had a system on either R12 or R134a.
My truck had a R12 system with mineral oil.
I have drained and flushed and cleaned this system and it is now running on R134a and synthetic oil the system has been in operation like this for the last 5 odd years.
Although the refrigerants do not matter the lubricating oil for the compressor does either mineral or synthetic and not a mix of them.

The precise amount of refrigerant is not important as factors like a choked or mud encrusted condensor will effect the performance what is more important especially for the life of the compressor is the correct gas/oil is used.

I would hope that the drive belt is slipping if not you could be looking at the compressor starting to nip up/sieze.

Hoping its just belt slip then, I have tightened since and will report back if any faults.
I have noticed the engine does load considerably when the air con kicks in - enough to move the truck forward, if softly braking in a traffic queue...quite alarming, especially to the car in front!

[TonyN]

There are cut outs on the A/C, if the engine is really cold, or under full throttle, or running to hot.

Could be you have a problem with the engine temp sensor or the TPS.

My truck disconnects the A/C clutch in any gear but P or N, its a pain and not found the reason yet.

[Overland Tonka]

There are cut outs on the A/C, if the engine is really cold, or under full throttle, or running to hot.

Could be you have a problem with the engine temp sensor or the TPS.

My truck disconnects the A/C clutch in any gear but P or N, its a pain and not found the reason yet.

Jeez.... So I was wrong all along..... Your not the surf messiah..... Nice to know somethings got you foxed...

[Predictable Bob]

He's NOT the Messiah, he's a very naughty boy ...

[TonyN]

[Wolfracer]

and another...