So I fixed my exhaust leak before the cat, and on the way home driving the coolant light went off a couple of times! The resovouir is full (was nearly empty before I filled it a few days ago). The radiator is too hot to open and check right now (Just drove it). Any advise?



Is the exhaust and coolant light unrelated?



Quick note: the car feel a little more powerfull now that the leak is fixed.

 

Oh it also started buzzing!

 

could just be a bad sensor, or you might have some air in your system.,

 

Thanks It's almost cool now I'll go check the radiator in a little. The temp gauge hasn't gone up high at all though. Maybe it's any gunk that built around the cat while the exhaust leak was present. Car may have been running rich. I guess the car needs to burn that junk away...

 

you can always just ground the sensor so it will never buzz again