Hearing a hissing noise underneath the hood of your vehicle, is something to take rather serious. This noise usually indicates hose failure which triggers your vehicle to have a coolant leak. The hissing sound may take place when you are driving or even after the engine is turned off. If you hear this noise coming from your vehicle, stop driving immediately, as it is a pressing issue.
Decreasing coolant levels in your vehicle cause the engine to overheat. This can lead to severe damage to the engine. Allow the engine to cool, before attempting to open the radiator cap. Do not attempt to open the radiator cap while it feels hot because the remaining coolant will be under pressure. When the engine has cooled, the coolant can be topped off. However, be aware that it may quickly leak out again.
Your vehicle should be serviced immediately if you hear this hissing sound emitting from your vehicle. Water pump failure and cooling system leaks can lead to serious damage to your car. At Clint Newell our technicians can relieve your vehicle of this issue in no time. Your vehicle should not be driven, until the hissing sound and coolant system is fixed.