So I now have a new evaporator, orifice and accumulator. It will frost the accumulator which it never did before. I have the gauges duct taped to the windshield and the pressures are strange to say the least. At surface street speeds, 30 to 45, it is cycling off at 12 psi and on at 42, high side at ...

Working on hot systems is not an activity I indulge in often but for the orifice I used to clamp hoses off, pop the connection apart and slide in a new orifice. Did not do many but those spring connections come apart and go back together so easy and it saved so much time that what the heck. I have h...

So I picked up a variable orifice for a Crown Vic Police cruiser at the Ford parts counter. This unit did come of a totaled low mileage police cruiser and because they spend considerable time idling they have the variable orifice. I clamped the pressure hose and manually triggered the clutch to suck...

My problem seems to be some kind of restriction upstream of the evaporator so that it is taking too much pressure to fill the evaporator. 250 psi on the high side to get the thing to even cool on a 70 degree day is way out of reason. And by cool I mean barely 40 degrees at the nozzle, the accumulato...

This thing is starting to make sense. I was putzing with it today and looking at the pressures and the way it is cycling it is acting somewhat like a low charge. I could not get the nozzle below 50 degrees. Just for giggles I pumped a bit more refrigerant into it and ran the high side pressure up to...

RE: cowl vent, with the system off there is no air bleed from any vent either dash or heater at any speed. As for the heater, long story but the heater core has been disconnected until last week. This problem predates the A/C problem. And while it would be possible for air pressure to overcome the t...

The crown vic a/c units fit on both sides of the firewall. The defroster duct lined up perfectly. I constructed a fresh/recirculating duct the fits in the old fresh air foot vent on the right hand side. I needed to make a custom fan housing to fit in the available space. The heater discharge is on t...

I have been working on a '63 Pontiac Catalina convertible. In that era a convertible with A/C was a rare thing. Being in So Cal with triple digit days A/C is not an option. I have adapted a unit from a late 90's vintage Ford Crown Victoria, it had all the outlets in a usable location and fit with mi...