there could be some leakage in the pump
No, a bad fuel pump will cause a no run situation.
There are two types of water pumps, submersible and fixed position. Each pump is wired differently from one another. Use the discussion page to state what type of pump you are talking about.
a bad water pump could cause low heat. The heater uses the coolant from the pump to generate heat.
What is the math in a voltage doubler without a transformer? how doesa voltage doubler without a transformer?
A poor electrical connection, either to the pump or in the fuel level sensor in the pump assembly is the most likely cause.
Yes it could.
No.
Non, replacing a water pump will not cause a hose to leak.
Fuel pump fuse or relay are bad.
An electrical short between the fuse and your fuel pump, I would replace the fuel pump first..
No it will not. Before it hurts the water pump the engine would over heat big time, and the w/ pump would probley still be good.