I just replace the water pump and the Overflow Reservoir
but when I start the vehicle I can hear the water running
under the dash when I press on the accelerator is that a
problem and what do I need to do to solve it
Turn the defroster on high heat to ensure that the coolant is flowing through the heater core. Monitor the coolant level in the reservoir ..don't let it go dry. Common after replacing any of the following the radiator, water pump, heater core, or thermostat.
Thank you, kisrs all good but will it every stop?
Yes , it should once all air is out of the system.
Either trapped air or partially clogged heater core. I've had a few do that
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