First make sure that the clamp is tight enough on the hose or that it's not defective or damaged
What happens when you put windshield washer in the coolant in a Grand prix Pontiac
remove hoses from firewall and make sure there is no rust or buildup on tubes. reinstall hoses and make sure hose clamps are really tight. If this doesn't work, your heater core needs to be replaced.
Get it warm and feel both heater hose's at the firewall and see if both are warm. If not, the heater core is probably plugged.
The ENGINE coolant reservoir is on the drivers side of the engine compartment next to the firewall
At the back of the engine on the coolant outlet that goes to the heater hoses on the firewall.
The engine coolant reservoir is in the engine compartment , on the drivers side , near the firewall
The coolant reservoir on the MK3 jetta is located against the firewall. It is a small round reservoir.
There are two separate sensors that play here. the "coolant temperature sensor" and "coolant LEVEL sensor". I suggest confirming which of these was replaced, as it is very common for them to be confused. likely you will find the coolant sensor that was replaced was the one on the engine (temperature); The LEVEL sensor is mounted either in the coolant resivoir or in the radiator. Probably just need the proper sensor replaced.
Only if the sensor is malfunctioning.
are you sure it is coolant? is the elbow located on the firewall? if that's the case then it's not coolant, it's condensation from the AC doing what it is supposed to do.
In the coolant reservoir up by the firewall.
Its more than likely your heater core.