I'm thinking the coolant level in the reservoir is to high to begin with. The cooling system has to work harder when the ac is running. The coolant expands as it heats up. If the coolant level was high to start with it will push out the excess.
Possibly a leak in the coolant reservoir bottle.
Look for a vacuum leak.
Look for a vacuum leak.
yes.
it means you have a collant leak (anti-freeze) of some kind start with water pump.
Is your car still under warranty? If so, I suggest taking it to the dealer. I noticed the reservoir had a slow leak in the new car I bought this year. This is not something that happens often so they have to order parts, but my repair is covered by the warranty. I hope that helps. Pepper
I would not expect a valve cover leak to cause a car to stall. A valve cover leak can fill the spark plug area with oil which can cause rough running.
yes it will. thru a hole in bottom usually.
you may have a head gasket leak. And check under your car for fluid leaks. A head gasket leak is serious get it check out immediately.
A loose power steering belt or the power steering pump has failed or the power steering fluid reservoir is empty because of a leak in the system.
If a vehicle is loosing coolant then there is a leak. If no leak is visible then the coolant could be leaking into the oil, or leaking into a cylinder and being blown out through the exhaust.
Yes, it is safe. That is not an essential item for safe running of the car.Yes, it is safe. That is not an essential item for safe running of the car.