I would suggest the first culprit to investigate is the temperature blend door *actuator motor*.
Common point of failure, and easy enough to replace.
But, be sure to review the "Related Questions" below for more ideas and specifics...
It is mostly cold or sometime even warm it depends on how high you are in the Taurus mountains
If it is a echo there is a switch. If it is on cold start switch it to run unless it is cold then you should switch it to cold start. There is also a silver switch that you have to flip up.
Bull Hill, also unofficially known as Mount Taurus, in Cold Spring in the U.S. state of New York.
Your battery is not giving full performance.
the cold cranking amp minimuim would be 550CCA
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