Question about 1996 Toyota Previa
Car blows cold air for about 1 1/2 hours, then the front gets hot and the rear air is ice cold, i can visually see the fins icing up, within the next 1/2 hour the rear air blows hot also. the a/c then will only blow hot (front and rear)until the car is turned off and engine stays off for about 12 hours, at which point the cycle will repeat itself if the a/c is called again. what might be causing this? seems like the compressor is fine or the air would never be cold, not sure what to look for or test?
Look to see that the A/C condensate drains are working. You should see water dripping out from the front & the back whilst the A/C is running. If no water; clean the drain tubes. Also, you need to be running the A/C on the RECIRC mode (the little car with an arrow doing a u-turn inside the car); if not, you are air conditioning outside air, and the unit is icing up from too much humidity. Sort of like running your fridge with the door open...
If neither of those items correct your issue, you may need to replace the A/C thermister; but, that is a very rare failure.
Posted on Sep 09, 2008
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Posted on Jan 02, 2017
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