Country of Origin: United States
My local mechanic claims he can't accurately check the air conditioner on my truck when the temperature outside is too cold. He says he won't be able to get an accurate check to see if he fixed the problem or not. I live in South Florida, and the temp is 73 degrees. I think he is full of crap, but his service manager says it is possible. I think they just don't want to work on the truck since they already tried twice before to fix it.
I'm complaining to their regional office, but just in case, has anyone ever heard of this crazy concept before???
Short answer is the mechanic is correct to a degree. Low ambient does not allow for a significant heat load on the system, which can provide false diagnostic information.
Thanks for the reply. So, the temperature was 73 degrees. Is that too cold?
Also, the AC is blowing hot air now. I would think blowing cold air would indicate he fixed the problem?
You should be able to check pressures and perform a general diagnostic with a 73 degree ambient. If the system was working correctly you should certainly see cold air flowing through the vents. Lower ambient servicing can be done but may hide a high pressure related issue which could be noticed with an ambient of 100 degrees or more.
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