After starting the car and turning on the A/C, I get about 3mins of cold air and then i get ambient temperature air from the vents. In order to get cold air again, I have to turn off the car for a few minutes. Any ideas on what is going on with my car??

98 Honda Accord 2.3L Automatic 4cly.
Low Side: 25 PSI / High Side 180 PSI / Amb 97 degrees / Both Fans on / A/C Clutch is Engaged , I block off heater hose to Blower and checked relays and fuses for the a/c system.

 

needs more r-134

your pressure is low. if im correct low side should be around 35-40psi and high side 250-300

it has to do with the ambient temp but i have misplaced the math.

i would check for a leak on your hoses, at the compressor, condenser, and receiver dryer. would like like a oily build up and dirty

what was your temp reading from your vents? stick a thermo in your center vent with your ac on max and on recirculate after 10 mins at 1500rpm take the temp reading.