On both the 1.9 engines (83-85) and on the 2.1 engines (86-91) this hose connects the metal pipe that attaches to the water pump and heads over to the coolant outlet near cylinder #2 exhaust port (placing the hose near the crankshaft pulley). On 1.9 only this short stub hose also goes from the thermostat housing to the cylinder head outlet near #4 cylinder exhaust port.