Originally posted by helpme:
would my car be able to cool down so quickly when i come to a stop if the pump was bad or the rad was plugged? i don't know. that is what wierds me out.




Purely a conjecture, but ... if the pump is not working and the coolant is not circulating, then you could get a lower temperature reading as soon as the part of the cooling system near the temperature sensor cools down. So, if the sensor is near the radiator and the fan *is* working, then you might get the false impression that the entire engine has cooled down.

When the impeller in my water pump failed, it was rather obvious. The coolant in the reservoir was boiling over and dumping coolant on the pavement. So, you might have a different problem.

-R.