Ah. I do <3 Ale.
Join Date: Mar 2008
Location: San Bernardino CA
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A/C system repairs are expensive for a reason.
the Dryer/receiver is attached to the condenser coil therfore any major work requiring more then 2 hours of open air exposure will require that to be replaced. not fun.....
Any of the "stop leak" shit you can Fill your car with is usually bullshit and is just a marketing ploy to get you to by that can over the other stuff
Like said above me. R134a should never require refilling.
from the factory the Altima's AC is charged with UV reactive (neon green) compressor oil, it makes finding leaks pretty easy with a black light. unless you have a massive leak and the oil gets over everything. which then you should be able to find the hole in the hose
sure you may only need a recharge every year or 2 but if your not replacing your 8YEAR OLD HOSES your going to have leaks/failures
when the system leaks it does not just leak Coolant, it leaks oil too, more so then coolant.
and if you keep the AC system running without oil your compressor will eventually seize up on you, toss the belt and may do more damage then if you just had the service work done earlier. that Oil also Condtions the O-rings in the system, which a cracked/broken O-ring is bad news.
rubber hoses Go bad, (rot) the Discharge and suction lines off the compressor both have Rubber hoses in them that should be replaced every so often.
the hoses are cheap and if you buy them yourself Nissan will do the install for you and not charge you for the part (saved me about $120)
and unless you Have the tools there is really no way to get around taking it to a shop.
you need a High side and low side hookup, A Vacuum to test for leaks and to remove O2 from the system. then you need to know how much Oil the system takes ect.... too much refrigerant is worse then not enough.
also 400 is way over the top for a drain and fill. they just hook their system up, suck out the old oil and Coolant and replace it with new stuff.
they quoted me like $112 for just the Drain and refill which covers the disposal of the oil and refrigerant. (its illegal to vent refrigerant)
Last edited by Zyphron; 06-05-2009 at 05:53 AM.