unplug line at bottom of overflow or bottom of radiator
For the radiator only, 2 to 3 quarts. For the complete cooling system, 8 to 9 quarts.
The water temperature sending unit on a 2003 Passat 1.8 Wagon is located on the engine block, typically near the thermostat housing. To access it, you may need to remove some engine covers or components for better visibility. The unit is usually threaded into the block and connected to the wiring harness. Always ensure the engine is cool before attempting to locate or replace the sensor.
The thermostat is located on the water pump. If you follow the lower radiator hose to the end not connected to the radiator you will find it.
Drain the water from the radiator. Remove the water hoses. Remove the retaining bolts. Reverse the process to install the new radiator.
Pour water/antifreeze at ratio 60/40 into radiator
Drain the water from the radiator. Remove the radiator hoses. Remove the radiator stabilizing arm. Remove the radiator retaining bolts. Reverse the process to install the new radiator.
No You don't Need to change the water pump But you should change it and the thermostat if radiator was full of sludge. if not then no to both.
Remove the water from the radiator. Remove the radiator hoses. Remove the stabilizing arm from the top of the radiator. Remove the radiator retaining bolts. Reverse the process to install the new radiator.
Drain the water from the radiator. Remove the radiator hoses. Remove the radiator stabilizer arm. Remove the radiator retaining bolts. Reverse the process to install the new radiator.
Drain the water from your Mazda Protege radiator. Remove the hoses from your radiator. Remove the radiator stabilizing arm. Remove the radiator retaining bolts. Reverse the process to install the new radiator.
It could be water pump, leaky radiator, hoses, head gasket, or just about anywhere else that the coolant circulates. You'll need to get under and find out where it's leaking.
replace your radiator cap...