Here is what's happening. While i was driving my 7 the buzzer and the coolant light went on but my temp was on normal. This happened a couple of times. After the engine was cooled down I checked the water on the radiator and was ok, but I had to add water in the overflow tank. The buzzer now stopped but after driving the car for a while and shut it off I can hear bubbles from the Air Separator Tank area.
Can you please guys tell me what is going on. My mechanic beleives is the engine.
Thanks
Harris

 

Sounds like you might just have air in the radiator....does it sound like the coolant is boiling?

You could bleed the system a little better.......or run the car, turn it off and let it cool down a little....then USE A RAG and take the radiator cap off and top it off with some water......you might have to do that several times......


If that doesn't work...ride a bike instead

 

or if you don't want to ride a bike do that and make sure you fill it at the filler cap AND the ast cap. you just have air in the system. but just make sure you don't drive with that coolant light on...

 

is there any smoke coming from your exhaust..? if white smoke is coming out in large amounts, it could be a water seal...i had the same problem and i know for a fact it's my water seal...for some reason it suddenly stopped but i still have to add coolant maybe once a week....if it's the ast you might consider checking it for any cracks or leaks or just eliminate it completely with the kit...