Heater Hose: Service and Repair

The heater hoses attach at the engine compartment cowl onto the heater core inlet/outlet and on the left side of the engine.

REMOVAL
The heater hoses for these engines are preformed hoses with quick connect fittings at the engine. These hoses are not serviceable and must be replaced using OEM parts. The hoses are attached at the heater core using spring tension clamps.

NOTE: Review Safety Precautions and Warnings before proceeding with this operation.

1. Drain engine cooling system.

Heater Hose Connection At Engine:

2. Using thin slide-jaw pliers, pinch quick connect fitting in, of hose to be removed.
3. Remove intake manifold plenum.

Heater Hose Connection At Heater Core:

4. Using spring tension clamp pliers, remove clamp at heater core end of hose to be removed.
5. Carefully rotate hose back and forth while tugging slightly away from connector nipple.

CAUTION: When removing hoses from heater core inlet or outlet nipples, do not use excessive force. Heater core may become damaged and leak engine coolant into heater unit.

INSTALLATION
For installation, reverse the above procedures.