a/c line popping off after charging. anyone else??

[old_blue]

So aside from the compressor and the evaporator the entire system is brand new and converter to R134. had the system charged and it worked great for two days. while sitting in the parking lot (not running) the line going from the condensor to evaporator blew off at the firewall. I believe this is the same line with the orifice tube. all lines are new, condensor is new, accumulator is new. I plan to pull the lines off to see if there is a clog somewhere but does anyone else have any ideas.

Also now the line seems loose (to firewall) so I am guessing when it blew it made it loose or maybe it didn't fit perfect as before? Either way it didn't leak and held a vacuum before it was charged. the other part that sucks is I bought everything last year so warranty has run out on all of it.

 

[Mustang5L5]

I've had it happen.

There is a spring inside the coupling. If its damaged, or kinked, the line can blow off. In my case, it was kinked. Inspect the spring for damage.

I had to go to Boneyard and locate another connector and remove the spring. It held fine after that until I remove the ac later on.

Of course, over pressurization could also be a cause

 

[FoMoCo17]

Ditto!

 

[old_blue]

great, thanks for the info. I guess it was only charged to 250lbs so that isnt an issue.

 

[mob]

I agree with others saying check the little spring in the line. When doing the a/c on my escort it would do the same thing and soon realized there was no little spring inside the line. But that car also had the black death so it was building up too much pressure anyways. If you need a new spring you can go to a parts store and ask for an a/c seal kit and it should come with all the o-ring seals and a couple of those little springs, may run you about 15-20 bucks though.