XSARA Picasso Airco refill quantity R134a

[martijn9876]

Yesterday our XSARA PICASSO 1.8 had a R134a refill.

Afterwards the Airco cooled inmediately, so I drove off accepting the 'repair'.
But after 5 minutes of driving. warm air again.
This symptom repeats when the car is turned off for a while. (couple of minutes of cooling, then just non-cooled air)

They should have done a vacuum test, so such a dramatic leak is unlikely.

Trying to check the recommended refill quantaties I stumbled upon this chart:
https://www.mijngrossier.nl/wp-content/ ... issens.pdf

The XSARA Picasso was filled with 650gram of R134a.
If I read the chart correctly that is too much.

Question 1:
What is the recommended quantity?

Question 2:
What are the possible causes for this symptom?

[RichardW]

Too much gas could be causing a high pressure and shutting the system down - but usually you need a big excess to do that. You really need to get it on diag computer to see what is going on. Is the engine cooling fan running when the A/C is switched on?

[PaulC5]

Have a look in your handbook since it might list things that turn off the air con such as if the engine is getting too hot.

[mickthemaverick]

You may find the gas quantity on the compressor sticker or even one of the under bonnet stickers, worth a look at least.

[martijn9876]

Thank you for the quick replies!

You really need to get it on diag computer to see what is going on. Is the engine cooling fan running when the A/C is switched on?

Can this be analyzed via the OBD-2 connector?
I have a VLINK adapter to connect with my iPhone. I will see what it allows me to see.
But that depends on the software. I use "Car Scanner" and "EOBD Facile" (any other recommendations for Citroen?)

Have a look in your handbook since it might list things that turn off the air con such as if the engine is getting too hot.

I am downloading the owners manual right now. (as my partner is currently on the move with the car)


Furhter:
Are there diagrams available for the Xsara Picasso?
like the one found in this thread? (this is for C3 Picasso)
viewtopic.php?t=72256

[Paul-R]

The first thing that stuck me about the chart was how out of date it is. It only lists the ordinary Xsara, not the Picasso as well. I have no idea for sure but maybe the Picasso, being a bigger vehicle and not really related to Xsara, might have a greater capacity?