| My temps at the center grill vary from 44 to 52. The inside temp in the cabin is around 78. These are with ambient air temp over 90. For a 2 seater that seems too warm. The compressor cycles more that I would expect. Every time it quits it warms up. Seems like its on a 50% ducty cycle. This is controlled by the dual pressure switch (and perhaps other inputs like inside temp, outside temp, duct temps, solar load, the ECU and the a/c computer [good Lord!, this a/c system is just too complex]), at least in part. Not having a way to test its realtionship between pressure and its conductivity, I was wondering if this switch can be replaced w/o emptying all the refrigerant. The one in my Mustang pushed a schraeder valve so it could be removed w/o refrigerant loss. Any ideas on this would be appreciated. P.S. BTW my x-type Jaguar would cool the center grille to 39 and take the inside temp to 72 in the heat of day. My 2011 Hyundai Elantra struggles to reach 42 and mostly hangs around 50. Lousy a/c in that beater car. Can't wait to pass it on to my daughter when she finishes grad school in May. My Civic Si, although I never measured it, always kept me happy. You can't beat a Honda for durability and function. My daughter currently drives my old 2001 EX with 190,000 miles. The air has never been serviced and it cools quite well. All the cars mentioned above have cabin filters that protect the evaporator. Perhaps the Z's evap is occluded with lint. Good old R12, why did you have to away...
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