Intermittent A/C operation

jeannie63jeannie63 Member Posts: 1
edited June 2018 in Nissan
starts off great, but if i stop anywhere and shut the car off, upon startting again, the a/c doesn't blow cold. it BLOWS, but not cold air. after running for about 25-30 min, it will again start cooling off. I live in Florida, so that 25-30 minutes is BRUTAL! any advise???
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  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    This could be due to a number of problems, so really the best approach is to have it checked out.

    Sometimes, if there is too much air or moisture in the system (due perhaps to a leak, or faulty recharging recently), the AC will actually freeze, blocking various passageways. So you start off cold, then it blows warm, and maybe after a while engine heat will defrost it.

    It could also be caused by low level of refrigerant, which will cut off the AC compressor

    There also may be a problem with the control module, which needs a scan tool to read the diagnostic codes that might be stored in there.

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