What is your question?
·
·
What is your question?
My car does while idoling, sitting in traffic and driving. It's also not holding water and overheating.
What makes this problem better or worse?
Adding coolant or letting it sit a while
How long has your 2005 Pontiac Vibe had this problem?
A little less than a month
Loosing engine coolant will cause overheating - the ‘source’ of coolant leakage needs to be discovered. Good luck!