Is the heater producing heat for you? Honestly, it sounds like there is an air pocket in the system that needs bled out. If that is the case, it will cause crazy things like that to happen because the coolant may not be getting everywhere it needs to be. However, that is why I asked the question about the heater. If they replaced the heater core, chances are that is where the air block may be.
As far as the "air hose" they repaired, what exactly was it? I never heard of an air hose.
As far as driving it back, make sure the coolant level is full and keep a close eye on the temp gauge. If it heats up, pull over turn it off and allow it to cool. Then recheck the coolant level, refill if necessary, and continue on.
Regardless, I still say there is an air pocket in the cooling system that is causing the problem. Have them check for that.
Let me know if you have other questions.
Thursday, November 12th, 2009 AT 8:03 PM