AC not blowing ice cold
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04-26-13, 09:53 PM
#8
Lexus Champion
look in the sight glass (at the top of the dryer, a silver aluminum can up against the radiator & condenser, near battery/fuselink area) and see if you have any bubbles when the car is warmed up, if so, you are likely to be low on refrigerant, which also means you have a leak, even if it is just permeation through the hoses over time. - otherwise, it could be a worn compressor if you have a lot of miles, or an electric fan out, or a blockage in the condenser area (think radiator area) - even leaves or a plastic bag could cause the insufficient cooling. On LS models equipped with a fan clutch, that would be very high on my list of suspects, right after refrigerant low, a weak fan clutch will do it every time!
interesting side note, as auto A/C is one of my specialties, the gentleman above made the statement "R-12 is colder than R-13" (he meant R-134a) and there is actually some truth to that! - it is indeed a more efficient refrigerant, here's an example of how to utilize this fact:
when I had my large auto A/C shop in Phoenix, we would sometimes do custom jobs for clients, and sometimes some rich guy with more money than brains would say he wants the coldest car in Phoenix, at any price, so here is what we would do to accommodate him, using a little thermodynamics, we came up with an idea where we would adjust the expansion valve or orifice tube for R-12 operation, and utilize the much higher efficiency condenser of his 134a system, and yet charge the system with R-12, and this would get the car below "factory new coldness" - this trick really only works in places like Phoenix or Vegas or Tucson or Dubai, because in normal climates you would freeze up the evaporator.
interesting side note, as auto A/C is one of my specialties, the gentleman above made the statement "R-12 is colder than R-13" (he meant R-134a) and there is actually some truth to that! - it is indeed a more efficient refrigerant, here's an example of how to utilize this fact:
when I had my large auto A/C shop in Phoenix, we would sometimes do custom jobs for clients, and sometimes some rich guy with more money than brains would say he wants the coldest car in Phoenix, at any price, so here is what we would do to accommodate him, using a little thermodynamics, we came up with an idea where we would adjust the expansion valve or orifice tube for R-12 operation, and utilize the much higher efficiency condenser of his 134a system, and yet charge the system with R-12, and this would get the car below "factory new coldness" - this trick really only works in places like Phoenix or Vegas or Tucson or Dubai, because in normal climates you would freeze up the evaporator.
Last edited by LScowboyLS; 04-26-13 at 10:29 PM.
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