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Would you consider these some good readings at 100 degrees in texas
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Re: Would you consider these some good readings at 100 degrees in texas
Originally Posted by Pro
After 5 mins, on Max, at idle.
Need to run it at 2,000 rpm for 10 minutes on recirculate, high blower speed with the doors and windows closed to get an accurate reading. Also need to know ambient temp and humidity. This is from a GM service manual. I like the chart because it shows values for both R12 and R134a.
Re: Would you consider these some good readings at 100 degrees in texas
No. That chart is appears to be maximum, not ideal.
Your pressures look decent, but it could definitely benefit from a little more airflow over the condenser. What is your center vent temperature on recirc?
Re: Would you consider these some good readings at 100 degrees in texas
Originally Posted by Pro
So I'm prob a little on the low side it seems.
Seems a little low but you would need to calculate the desired superheat for the interior temp/humidity, know the evaporator outlet temp and look at the pressure/temperature curve of the refrigerant you are running to know. The more simple way is the evaporator inlet post orifice tube and the suction hose off the accumulator should be very close to the same temps. Normal superheat target is in the 5-10F range.
You are at risk of short cycling and cooling loss when the engine is running above idle with good airflow across the condenser.
