Dash AC not cold
I'm wondering if my expectations for my Dash AC are set too high. It just doesn't seem to blow very cold. When it is about 85 out it comes out about 63 out of the dash with an AC temperature gauge. I ...
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dodge guy wrote:dougrainer wrote:dodge guy wrote:
Sounds like it’s low on refrigerant. You would need gauges to accurately see the pressures and determine how much it needs.
From the EXPERTS on the link I posted. Gauges are good but you CANNOT accurately determine the correct charge. As I stated, TOO MUCH coolant will cause low output as well as LOW coolant. Gauges cannot be that accurate to determine that. You can get close but close will not give you the BEST cooling other than an exact charge. If I was paying somebody, I want the BEST not close. Doug
From the link.
the only way to be certain of an exact charge is to fill an empty system with the
specified amount of R-134a refrigerant.
A good AC guy knows how to read gauges (and I am one of those people). You have to know outside temp and humidity and have a chart to compare that to the pressures on your gauges as well as the vent outlet temperature. It can be done with the right person. Sadly not many like that left anymore!
"the only way to be certain of an exact charge is to fill an empty system with the
specified amount of R-134a refrigerant".
That is exactly from the Manufacturer of the Largest Maker of RV dash AC systems and obviously from THEIR Engineers in their manual. I also know how to read gauges (42 years of experiance). Doug
