I have about 50k miles on my Tacoma. When I'm driving, my A/C seems great.
When I'm stopped, either parked or at a red light, after about 30-45 seconds my A/C started to get gets warmer and warmer to the point that it barely blows cold at all after 2-3 minutes. It gets warmer on the passenger side first and then moves to the driver's side vents. After I start driving again, it gets cold pretty quickly. I recently added a small can of R134 to the system, as it was a little low. The gauges showed it to be in the normal range after, but this did not fix the problem.
I've also noticed that the A/C compressor seems to cycle on and off frequently while I'm at idle (I cannot tell what it's doing while I'm driving).
I read some similar threads on here and one of them said to check the condenser fan, but as far as I could tell the truck just has the one clutch fan. I'm frustrated and though I don't want to pay for A/C work, I'm tempted to take the truck somewhere to have it looked at. If anyone has anything I can check out first I'll gladly do that. Thanks.