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Why does my a/c temp rise from 43 deg's to 65 deg's at the middle dash vent

(1995 Buick Skylark)
in Pinellas Park, FL on July 17, 2016
ok my vent temp is 42 at idle and driving up to about 35-40 mph any faster the temp rises up around 65 deg's everything is new no reman stuff vac it down to -28, high side pressure is 225-low side pressure is 40, outside temp is 90. anyone have a clue thks dave
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Popular Answer
of Wray's Auto Service on July 18, 2016
A vehicle that age may have blend door gasket failure, pinch off one of the heater hoses to disable the coolant circulation, and check the duct temp, if that helps, just install a water shut off valve in one of the heater hoses.
on July 18, 2016
Hello wrayauto: Thanks for the input I was thinking along the same lines I thought I might have been losing vacuum and the outside air vent door wasn't closing, but your idea is a very simple try, I'll you know. Thank you Dave
Did you have the system on max air or normal air settings. Normal air conditions the air from outside max air recirculates the air in the cabin. Start your system on normal then when it gets a little cooler then turn it to max. If you want to have it looked at give me a call to make an appointment.
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