I notice that my 1992 525i overheats when it sits idle for several minutes
or more. Today as I was waiting in line for coffee, it went quite high. As
I drove away, it barely touched the red area and the coolant temp warning
went off, as I drove, as it always does in the past, it dropped back to
normal within a minute.
The radiator was replaced 2 years ago before I got the car and supposedly
the thermostat was replaced as well. What might be causing this? Thanks!