2011 Ram Air conditioning Issue

Ram2011 · Oct 18, 2016

The AC in my 2011 Dodge Ram Hemi suddenly stopped working. The compressor engages but the AC blows warm. The high and low static pressure is 75 psi with the compressor off. There is no change in pressures when I engage the compressor (I can see the compressor clutch engage). The compressor sounds fine/normal. Is the compressor shot or could it be the expansion valve or some other issue? I’ve searched the forum but haven’t found anything for the 4th generation trucks.
Thanks in advance
Joe

crash68 · Oct 18, 2016

If neither the high or low pressure change when the compressor engages, good probability it is shot. Automotive AC systems usually use a restrictor tube as a metering device, even with an expansion valve stuck fully open would cause a pressure drop when the compressor runs.

Ram2011 · Oct 24, 2016

Thank you for the reply, it does seem like the compressor is shot.
This weekend I turned on the AC hoping maybe it fixed itself. When I turned it on a noticed a faint shooshing sound from the heater box behind the dash. Could that be a clue?

2011 Ram Air conditioning Issue

Ram2011

Junior Member

crash68

ACME product engineer

Ram2011

Junior Member

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