rcdatadude
Newbie
To make a long story short, I replaced the AC compressor on my 98 k1500 along with Everything else. New compressor, condenser, evaporator core, heater core, orifice tube, dryer, hoses, and pressure switches including the one on the back of the compressor. Instead of using the standard AC Delco compressor, I used a Sanden 4440. I’ve had 3 AC Delco compressors on this truck. I read the Sanden compressors were a much better option, so I thought I would give it a try. We put everything on today. I added oil to each component and drew a vacuum that held for a while. I started adding Freon, but the system only took 12 ounces. The compressor started cycling but only hot air was coming through the vents with max ac full blast. A couple of questions…. One, could there be a blockage somewhere with everything being new that might keep it from taking Freon? I removed all the hose caps and plugs I saw. Second, could it be a door actuator that blends between the heater core and the evap core? I didn’t write down the pressures on the high and low side, but I can provide those tomorrow. I’m in Texas, so it’s getting pretty warm these days. Any help would be appreciated. Thanks in advance.
