RS2 Low Pressure Service Valve

[Chasman]

Does anyone know the location of the low pressure service valve used to recharge the air conditioning on an RS2?

[robo]

In front of air con radiator

[Chasman]

Thanks. On the S2's it's on the compressor - low pressure to draw in gas from the charging rig... on the RS2's it's not there... Tom thinks the one you mentioned is high rather than low pressure... is condenser the same as air con radiator?

[jade]

On my rs its on the bottom of the compressor

[Chasman]

OK, cheers. We managed to fill it via the high pressure one but it still doesn't work so it's going in for further surgery... thanks for the help guys.

[Paul S2 Coupe]

I would also like to know where the LOW pressure valve is on the S2. I bought a DIY R134a recharge kit that connects to the low pressure side but the valve on the compressor is not a standard R134a or R12 valve. My local A/C specialist looked at it and did not recognise it. Does anyone have any idea what that valve is annd what the connection is?

Thanks,
Paul

[hermanio]

I would also like to know where the LOW pressure valve is on the S2. I bought a DIY R134a recharge kit that connects to the low pressure side but the valve on the compressor is not a standard R134a or R12 valve. My local A/C specialist looked at it and did not recognise it. Does anyone have any idea what that valve is annd what the connection is?

Thanks,
Paul

anyone knows what valve is on the compressor, could you use an adapter ?

[Billman]

I fill it up through the valve at the front of the radiator.

[hermanio]

could you also fill up using the low presure sensor valve ?

[johne]

anyone knows what valve is on the compressor, could you use an adapter ?

Certain pressure hoses for A/C gauges will connect to the port on the compressor but they often have a oneway valve in them which you have to get the right way round to allow the gas to go in.


The low side port exists on some (all?) cars but it's hard to find. It's inside the car in the passenger footwell sandwiched between the bulkhead and the motronic ecu alongside the A/C low pressure switch.

Most garage recharge systems will let you fill through the high side port which is in front of the radiator but if you attach an aftermarket refill R134a can this way through an adaptor (which is what I do) make sure the compressor isn't running despite what it may say on the can or the can will explode for sure.

John