It's recommended to do when you are replacing the timing belt.
Answering "How do you replace the water pump on a 1994 Toyota Camry?"
It should be located in the water outlet.
It depends on town, from my experience $200-500, if you want to change the water (which is reasonable) pump $400-600.
The same way you change the timing belt. the water pomp runs off the timing belt. It,s a pain in the butt.
draing radiator water from toyota camry1994
You should use three liters of coolant in the Camry. If there is still room to add more fluid, then add water.
It's a good practice to change the water pump when you are changing the timing belt.
how do you install a water pump on a 1992 toyota camry
It is located on the bottom of the radiator
You can find it in the water outlet.
You do not need to, but it's highly recommended. If water pump fails after you change the belt, you will have to do the same work as before to replace the pump.