Hey i have a 97 silverado and my ac is not working. I actually do residential hvac for a living so i got a decent grasp on it for the outo side. The compressor is kicking on but nothings getting cold. Bought a recharge kit and when i went to charge it up i actually noticed the low side was really high. Dont have a high side gauge so im just curious if the orifice tube could be clogged... Can anyone tell me if this sounds right and where can i find the orifice tube... Thanks

 

Ok so new info.... The low side reads about 60 and the high side is about 40 when the compressors on.... when its off the pressures equalize at about 50 psi

 

A blockage in the system would cause the low side to go into vacuum. With a high side reading of 40 the system is nearly empty. The reading of 60 on the low side would make me question the accuracy of the gauge. The recharge in a can kits (gauge made on) are not the best way to go

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