TwinTurbo.NET: Nissan 300ZX forum - AC still wont get cold.
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Subject AC still wont get cold.
     
Posted by Luminar on July 19, 2012 at 4:33 PM
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Message So the A/C still doesnt get cold in my car when the exterior temps are over ~85 degrees. Assume all ext temps reflect approximately 60% relative humidity. When I pull the car out of my garage (in the shade all day) late eve (82ish ext temp) the a/c vents drop quite quickly to 68ish degrees, after driving approx 1-2 miles they will sink below 60 degrees at my vent thermometer. When I drive the car to work and it sits in the sun ALL DAY and leave work (approx 95 degrees) I drive 12 miles home 7 mile stretch of 60mph no traffic light or stop, and the temp will NEVER come down below 68 degrees. As soon as I hit a light or come to a stop, temp steadily creeps back up to about 75.

A/C condenser electric fan works as designed and is running full on. the OEM fan clutch is brand new. Radiator is brand new. Pulled the radiator and hit the condenser with compressed air (not much came out) and verified no bags or anything was blocking it. The cabin controls function normally as far as I can tell. What gives? This kinda thing really pisses me off because it gives me little to no incentive to want to drive the car during the SC summer.

     
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