Water pump is run by the timing belt. So, you have to do everything required to replace the timing belt plus a few more capscrews that hold the pump in. These should be done at the same time, 10 years or 100,000 miles, which ever comes first.
in with the timing belt change them at the same time
The water pump on a 1991 Subaru Legacy is in the engine compartment. It is found at the base of the engine.
looking for info on locating water pump and timing belt on 99 subaru outback 2.5 liter motor, hopefully with a diagram...thank you
Generally it is recommended replacing the timing belt and water pump on a 4 cylinder Subaru engine at 10 years or 100,000 miles, which ever comes first.
You need to burp the radiator and cooling system.
See your user manual, its great for help with all the basic maintenance
For the heater core. All cars have them.
If I did it would be because there is a flaw in the gasket that seals the trunk lid. To find it take a flashlight and have an assistant with keys close you in the trunk. Have your assistant run water from a hose over the trunk lid while you look at the seal from inside. You will find your leak.
If you change the timing belt, I would replace water pump as well. Unless it's not working I would not replace it....
Go to: http://opposedforces.com/parts/legacy/us_b12/ Select Body Style, Engine Type, Transmission, etc. Go to Cooling System. Select Water Pump; You should find Thermostat, Gasket & applicable part numbers...
Same problem turned out to be a hair line fracture to the head!
see this http://users.sisna.com/ignatius/subaru/headgasket.html