I know there's been a lot of discussion about this.


One suggestion was to put pipe insulation on the low-pressure (cold) side.


But that made me wonder- if the problem is that this line is getting too cold, won't insulating it from the heat of the engine compartment make it even colder? And when you turn the A/C off, make it take longer to melt?


Furthermore,:
Is the problem ice on the outside of the lines? Or is something inside the pipes actually freezing? Because if the ice outside is an issue, perhaps just wrapping it in tape and spraying with something that will stop water from condensing on it (like WD-40) could help?

 

From what I understand, the icing is internal at the orfice tube where the refrigerant changes pressure in the system. If you are low on refrigerant it can freeze at that point, blocking the tubing. Turn off the AC for awhile and the ice melts. Insulation on the outside has no effect.