Tim wrote:Hard to beat you listed pressures.

IS the capillary tube on the exp valve attached to the suction line and wrapped with moisture resistant tape?

The system is using the 99' Mercury OT, the TXV was removed as the plumbing was deemed too difficult at the time of installation...

Your input and output of the evap should be about the same temp. This will tell you the evap is fully flooded. The output can be a few degrees colder. Gm used to state that to do a partial charge to fill system until both of these lines are the same temp and then add a few more oz of refrigerant. I...

A smaller orifice should increase the suction pressure, an increased suction will increase coil temperature. If your vent temp is 60° you probably need to increase the orifice tube size "meaning the hole in the tube need to be larger". A lot of things increase vent temps. fan blowing to h...

Is the air temperature out of the vents in the 30s? Or am I reading wrong? If so, I wouldn't do anything right now. In the very beginning I was able to reach high 30's vent temps before our summer heat and humidity came in, I accidentally typed my initial evap temp readings when the ambient air was...

Am I understanding you're using a 71 ford evaporator? I'm not sure that you will ever get that evaporator to work correctly with the newer stuff off the mercury. At this point you're probably going to have to experiment with a few different orifices, probably would not hurt to use an adjustable low...

Hi all, I have pieced together an A/C system for my restomod truck and I am seeking some diagnostic help with pressure and fluid volume. Here are the vehicle details: 1971 Ford F100 body on a 1999 Mercury Grand Margquis chassis and drivetrain 1971 FoMoCo Integral A/C & heat box with 1971 FoMoCo ...