There are three water pumps one mechanical and two electrical, the mechanical one is on the front of the motor one of the electrical is on the driver side of the raditor and the other electrical one is under the coolant reservoir.
The water pump for a 1998 Cadillac catera should be on the front of the engine. It is located near the center.
Oil cooler is bad.
no just one
"http://wiki.answers.com/Q/Where_is_the_hot_water_control_valve_on_the_Cadillac_catera_located"
passenger side front wheel well
Follow the top radiator hose down to the water outlet on the engine. It is in the outlet.
one way is the headgasket is blown oil can leak into the water jackets and get wixed with the oil
It is on the front of the engine. It is not a job for a backyard meahcnic.
just mehanical and yes its fairly easy
Heater hose or heater core.
Pressure test system to determine where leak originates to repair Water Control Valve, on pass. side behind engine.
can water pumps stall vehicles