Alfa Romeo Forum - View Single Post - 1996 Alfa 164 Super 24V

King Rikard · 05-05-2008

Hi keithhm!
I´m pretty sure the system uses R134, most cars later than 1990 do. And most cars that originally used R12 can be filled with R134 without any problems. In some cases the pressure drop valve has to be replaced with a newer one, otherwise you may not get full cooling power. I doubt that is the problem with your car though, I would bet the workshop messed something up while replacing the heater matrix, maybe they didn´t manage to mount the flap motor correctly, forgot to connect it or the heater flap is sticking etc. You could easily check the A/C by starting the car from cold, setting the fan to maximum and temp at low. If it´s warm outside, the radiator cooling fan should kick in within half a minute or so. The condenser will get quite warm if everything is working properly.

That leaves the temperature mixing device, which could be defect or messed up by the workshop. My two cents worth....
Hope you get it sorted!

05-05-2008	#2 (Post Link)
King Rikard AO Member Join Date: Jun 2007 Location: Falkenberg Posts: 121 Member car: 166 2,4 JTD Sportronic	Re: 1996 Alfa 164 Super 24V - A/C Gas Type ?! Hi keithhm! I´m pretty sure the system uses R134, most cars later than 1990 do. And most cars that originally used R12 can be filled with R134 without any problems. In some cases the pressure drop valve has to be replaced with a newer one, otherwise you may not get full cooling power. I doubt that is the problem with your car though, I would bet the workshop messed something up while replacing the heater matrix, maybe they didn´t manage to mount the flap motor correctly, forgot to connect it or the heater flap is sticking etc. You could easily check the A/C by starting the car from cold, setting the fan to maximum and temp at low. If it´s warm outside, the radiator cooling fan should kick in within half a minute or so. The condenser will get quite warm if everything is working properly. That leaves the temperature mixing device, which could be defect or messed up by the workshop. My two cents worth.... Hope you get it sorted!