AC Recharge?

2010 Toyota Tacoma, DC, TRD Off Road. Just turned 41,500 miles on it today. AC doesn't seem to be blowing as cool, however, it is also 100+ outside.... Anyone recharged their AC system, or is it just the heat??
Thanks!

 

You'll need gauges to do it right, it maybe fine but until you check the pressure it's any ones guess. @ 100 degrees low side 50-55 PSI high side 315-325 PSI any thing much less it will need a recharge.

 

Likely just the high ambient heat.
Outside temp goes up, condensor temp goes up, refrigerant temp goes up.

Don't just grab a can and dump it in... good way to damage your system or actually decrease performance.
AC systems actually blow VERY cold when undercharged close to the point of compressor cycling.

 

x2

Because the high side is regulated by the TXV, it will be at relatively the same pressure regardless of charge when the compressor is running, and only the low side pressure will be affected by charge level. When the pressure gets lower, the pressure differential past the TXV is larger, and it can absorb more heat.

On days like today when it's the hottest it's been since 1936 and beating the temps in death valley (freaky stuff for the snowbelt) I gotta leave it in max/recirc. At least then it has a chance of getting the interior under 80.

 

High humidity will make AC work harder. Given that I live in coastal SC, there are days my AC is working harder to cool.

 

I picked up a set of gauges to check my a/c. The ports on the a/c hard lines are female. The fittings on the hoses for the gauges are female. WTF? Is this a Toyota thing? Are there special connections for Toyota? What the heck. Certainly stopped me in my tracks!