bond207

upgrading to one size is OK?

More likely it is out of gas. Gas never get consumed even after 5 - 10 years if there is no leak. So if its low on gas or completely out of gas you need to find the leak and then repair it and then top up gas. Once leak is repaired, gas is there and still if you get hot air that means compressor is not working or have some minor or major issue. Usually compressor fails very rarely, so dont worry it must be leak and gas issue.

all lubes and filter like engine oil and oil filter, gear oil and gear oil filter, radiator coolant, brake oil, PSF etc Brake pads, brake drums check (or re surface them) Check or change fuel filter and fuel line.

Bridgestone makes wonderful tires.

Check driver door sill, it shud have ideal pressure. I think its 28psi in front and 30 at back.

Check the power socket fuse, it must be blown out as its most common than failure of cigg lighter.

What can cause coolant to leak into the ECU of my Peugeot 207?