juan214
Full Access Members
The evap superheat test should show no change in temp between inlet and outlet according to the link I posted. Yours does agree but seems high. All the systems I've dealt with so far have had super cold lines to the compressor, even to the point of being uncomfortable.
I'm questioning why it is gaining heat from the condenser to the evaporator though. It may be picking up engine heat since it is still in the gas state.
The condenser should be tested at the line connections on the condenser. Right now those readings are indicating an airflow problem there. Your not getting enough heat removal to change the refrigerant back into a liquid in the condenser. If you can get a shop fan that moves a bunch of air, place it in front of the radiator and measure the temps again and see if they have a wider spread.
Just thinking outside the box now - if the condenser is partially plugged it will not be as efficient as one that isn't and not condense the refrigerant as well or not at all. To see if that is happening you can use your ir temp gun and measure temps across the condenser - left to right and top to bottom. The inlet side should be hotter than the outlet side.
Attempted that earlier, but tried it again with the IR Thermoter (which is off) Through grill at least it can do this test just for change not accuracy.
Top left shows about 165* scanning across Left to Right it drops and drops down as I scan downwards. coolest at bottom left 115* but not the same as ambint temp which is still 93*
Line with gun:
High Line: 185* (+/- 1) temp before the HP sensor and after (at condenser) are the same.
Low Line Split: 115* (+/- .5) from condenser (lower)
120* (+/- .5) after split (upper)
No refrigerant added to system yet, not increased by 5 pounds yet.
Went and had my shock mount welded back together on the truck.
Their R/R machine doesn't work either. its to late to do it, or to hot to work. Was going to have the system vacerd out. Oh well.
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