I'm assuming it's using an orifice tube is it the right one? When you spray water on the condenser does it blow colder air? You should be getting 40F easily out of that system. I would check the orifice tube I have gotten the wrong one before in a kit from rock auto. I noticed the pressures were no...

Yes, the tubing is hot right "before" the O-tube and cold "after" the O-tube. The accumulator also feels cold, like it should. The gauges COULD be funky, I suppose. The high side pressure gauge on my gauge set matches exactly what the scan tool says for high side pressure so that...

I decided to replace the evap along with a new Denso compressor, a new accumulator, and a new orifice tube. All the repairs went well. I vacuumed the system for an hour and 15 minutes and achieved a vacuum level of just over 1000 microns. I charged exactly 1.6 pounds of new refrigerant from a brand...

This is a long shot but try misting the condenser with water at 1800 and report pressures. Is there any possibility that you have too much oil? Vehicle mileage? Did a comp on the system ever grenade? Retrace your steps on that. How many miles on the truck? OT in backwards? I am familiar with the wa...

Try bringing the engine speed up to ~1,800 RPM. At idle speed, the compressor isn't doing much of anything. Hi I dove the truck 2.5 hours away from home last weekend (and back) and even at 75mph it still blew 50-60 vent temps.... while outdoor ambient temps never went above 80 degrees the entire we...

Cusser wrote: ↑Thu May 30, 2024 2:39 pm Is your truck regular cab or 4-door truck with dual air? If 4-door, I'd say 1.6 lbs R134a is not enough

It's a 4 door pickup but it only has front A/C. 1.6 Pounds is the spec for my truck.

A few more pictures....


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This problem is with my own truck.... It's a 2006 GMC Sierra 1500 with the 5.3 engine. I had a leaky evaporator but if I charged the system with refrigerant, it would cool really well. It was a working system that needed a new evaporator. I decided to replace the evap along with a new Denso compress...