Why does my van overheat with the a/c on when stopped in traffic or at a long light?

Asked by Aug 18, 2014 at 07:26 AM about the 2006 Toyota Sienna XLE

Question type: Maintenance & Repair

The a/c starts blowing warmer air and the temp gauge goes toward hot.  Is fine one starts moving again.

1 Answer

34,615

Your cooing system is not up to par. But you already know that. First, check your thermostat. It might not be opening at the correct temperature. Next, get your cooling system flushed if the thermostat isn't the problem. There are additives that will disparate heat from the cooling system. I think one of them is called WETTER WATER . Frankly, I'd flush the cooling system.

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