hi Finally found a system that is universal enough to work on almost any carburettor car . VS the Rochester unit which only functioned once u flicked the accel pedal which of course your engine might stall if equipped with performance cam .GM repackaged it as it was an idle stop solenoid originally....

hi Clean the evap ,and change the TXV while its all out . Cleaned the fleet vehicles every 60--80k miles . Most were at least partly covered in debris . Excessive long term dirty evap cores are far more likely to leak . Caused by excess moisture and any acid based chemicals on the air born debris .

hi low side freezing point temp is around the 28-30psi On your gauges commonly seen 20--40psi but usually 25---35 psi . Yes there are exceptions High side R12 was common at 130--150psi in refrigeration convert this to temperature R12 at 130psi == R134a at 150psi SUPPLYING THE EVAP WITH COLD COLD 100...

hi A good working auto air can achieve low vent temps in hot weather . My 2007 diesel Ford Ranger I finally fixed properly in approx 2015 . Done at approx 65,000miles new evap core new txv new desiccant bag added 2nd condenser with e fan Performance in the record setting hottest day 46 deg cel 114f ...

hi
Sanden 7H15 common conversion compressor is 154.9cc = 9.45 cuin ,,,,, oil capacity 130--200ml pending model

Sanden SD508 compressor size 138cc = 8.4 cuin

Delco R4 comp size 164cc=10 cuin . oil cap 170cc

hi many custom systems out there in operation R134a sight glass running full How u ask because the condenser is either very large or the vehicle / machine uses 2x condenser cores high pressures common 150--200 psi in 90 --115f ambient weather and high humidity Compressor oil R12 and R134a for ----- ...

hi 1/ charge/repair in shade ,but remember vehicle will operate in full sun 2/ a good air con should be able to operate with at least 1xdoor open if not all !!! 3/ yes always test a/con on recirculate 4/ & 5/ both blowers on medium speed 6 / pressures and temperature performance need checking at...

hi Not trying to force this onto people but like my trade school taught me ,learn the theory /actual correct spec of a good example and everything else is easy . And yes working in automotive is always a compromise . MY passion for auto a/con was started along time ago , I then did repair work in th...

hi What people forget , any really experienced refrigeration mechanic absolutely HATE automotive . WHY because the systems are a complete compromise and 80% of them are built to a price .-- ---So what is wrong the condenser side ,,, is way way small has more to do with low hood lines and total cost ...

hi A 1 ton txv seems a little on the low side . Although the Tx is suppose to be matched to the size of evap . I would try a 1.5 ton valve. Aftermarket suppliers can have several different sizes of evap cores . Hoping u have not installed a unit thats to small . Lowering the high side pressure to be...