2011 sport SLS bought new. Has 93k miles on it and for the last 6 months, when I reach over 50-70 mph the ac will stop blowing cold and actually blow hot. I am in Houston, so you can imagine how terrible that would be in the summer.
The mechanic has replaced compressor, the ambient air temp sensor, the dash console and pretty m uch everything else. He tells me there is a sensor that switches the fans on and off, but says hes replaced it all. Is this a problem with the main computer?
AC works great otherwise, driving around town and such.
AC stops blowing cold after reaching 60mph
Typical mechanics are not A/C technicians. I've already been in garages w/ the 'juice-it-up' Freon/oil cans sitting around. We can perform that temporary improper fix ourselves, and I have. I certainly wouldn't have an auto mechanic taking a look at my home's heat pump systems. The mere fact he's replaced everything w/o success is indicative of this fact. There are specialized automotive A/C shops around...you just have to find one near you. Anytime you crack open a refrigerant line, the correct (and only) way to recharge the system is by pulling a vacuum and recharging utilizing the proper equipment that 90+% of Joe-Blow mechanics don't have, never use, likely never seen, and therefore were never trained properly in how to handle A/C. Just visit an HVAC forum and have a look at the posts. You will quickly realize that HVAC (doesn't matter...car, house, appliance) is an entirely fickle specialization all its own. Just like all this nifty whiz-bang automotive automation. The sooner the auto industry recognizes these facts (likely never), the better off we consumers will be.
Ron
2010 Kizashi GTS, CVT, iAWD (3/10 build date)
2011 SX4 Premium Hatch, CVT, iAWD (12/10 build date)
2018 Mazda CX-5 iAWD Touring
2014 Wrangler JKUW (GONE, traded
)
1991 Samurai, 5-Speed, EFI, Soft-Top (
sold)
2010 Kizashi GTS, CVT, iAWD (3/10 build date)
2011 SX4 Premium Hatch, CVT, iAWD (12/10 build date)
2018 Mazda CX-5 iAWD Touring
2014 Wrangler JKUW (GONE, traded
) 1991 Samurai, 5-Speed, EFI, Soft-Top (
sold)When you say "blow hot", do you mean warm outside air or do you mean hot air as if you had turned on the heat in the car?tireseus wrote:2011 sport SLS bought new. Has 93k miles on it and for the last 6 months, when I reach over 50-70 mph the ac will stop blowing cold and actually blow hot.