They could be related. If it is overheating and blowing cold air, make sure the coolant level is full. If it is, replace the thermostat to see if that takes care of the problem. If that still doesn't work and you are sure there is no air in the system, I would then start considering a bad head gasket.
Let me know if you have other questions.
Friday, December 10th, 2010 AT 7:26 PM