i have a 2003 vibe after it is warmed up heat works fine while driving,but if i am sitting in a parking lot idling it blows cool air till i start moving.........thank you for your help in advance,,,,,pretty awsome site
Checked your coolant level...?? When moving the pump is doing a good job of shooting the coolant onver the "bubble" that is likely in the system... When you stop and the engine isn't revving... no heat..