How do I know if my thermostat or water pump is bad?
Symptoms of a Bad or Failing ThermostatTemperature gauge reading very high and engine overheating.
The first and potentially most alarming symptom will be the temperature gauge reading high into the red within the first 15 minutes of your vehicle engine running.
Temperature changing erratically.
Coolant leaks around the thermostat housing or under the vehicle..
What causes a water pump to go bad?
The most common water-pump failure is due to worn bearings. … And mixing coolants, or using the wrong coolant, can cause damage to the water-pump seals and bearings, and can lead to the impeller shaft to fail. If the pump is out, look at the impeller for signs of corrosion or cavitation.
When should a water pump be replaced?
A water pump should last 60,000 to 90,000 miles, about the same amount of time as a timing belt. “Many water pumps are located behind the timing cover,” Beckwith says. “It makes sense to replace the water pump when you have the timing cover off and are already that deep into a labor-intensive repair.
How expensive is it to replace a water pump?
Most often your water pump replacement cost will be between $40 and $80 dollars. Exceptions to this price are the electric water pumps which will cost between $150 and $500 depending upon the model of car. A serpentine driven water pump is fairly accessible, so installation will range between $80 to $150.