I have been having trouble with my coolant buzzer lately making noise until my engine warms up. I checked my coolant levels, everything looks good. It just annoying listening to buzzer for good 10 minutes. Is there anything else I can do? Any suggestions greatly appreciated.

 

It seems like you have air bubbles in the cooling system. You may need to bleed them out.

Give us some more info: What kind of car and have you recently had any sort of cooling system service? (Radiator, or water pump replacement, etc.)

 

Its a 1993 Rx-7. Yes I just bought it from the dealership, was told they replaced radiator. A separate water temp gauge is installed so I am keepin an eye of the temp. How do I bleed out air. I seen methods where it looks like a funnel filled with water and observe the bubbles while engine is running. If so, can u tell me how to do that method?

 

Does this come with a warranty? Since you bought it from a dealership you might get some coverage if you don't delay. 3rd gen RX-7s can overheat from a radiator issue and if you only change the radiator you might have an engine with damaged coolant seals. Even Mazda dealers have a history of getting RX-7 diagnostics wrong.

I would look up the "champagne bubble test" and test and look for bubbles, or if you can find a rotary specialist shop, let them investigate.

If your car is eating coolant you can get your symptoms. It could be as simple as needing a new radiator cap, but it could be an engine needing rebuild. I would hurry because if it is the latter, time is critical to getting the dealership to cover it.

Dave

 

Thanks for the advise.

 

Does anyone know whats the black washer-looking piece on top of the coolant resivior tank? Is it normal when I fill it with coolant for it to overflow out of that black washer-looking part.