Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSJAGUAR1991XJ-6 L6-4.0LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGHEATER CONTROL VALVESERVICE AND REPAIRWATER CONTROL VALVE
1991 Jaguar XJ-6 L6-4.0L
Water Control Valve
1991 Jaguar XJ-6 L6-4.0LSECTION Water Control Valve
Water Control Valve
Removal
1. Open the bonnet and drain the engine coolant into a suitable container.
2. Disconnect the water valve vacuum pipe (1).
3. Loosen the heater hose securing clip and remove the hose from the heater matrix pipe (2).
4. Reposition the water valve for access.
5. Loosen the heater to water valve hose clip and remove the hose assembly.
6. Loosen the water valve to cylinder head hose clip (3), and remove the water valve assembly (4).
NOTE:
- Installation is the reverse of the removal procedure.
- Refill the engine with coolant.
Removal
1. Open the bonnet and drain the engine coolant into a suitable container.
2. Disconnect the water valve vacuum pipe (1).
3. Loosen the heater hose securing clip and remove the hose from the heater matrix pipe (2).
4. Reposition the water valve for access.
5. Loosen the heater to water valve hose clip and remove the hose assembly.
6. Loosen the water valve to cylinder head hose clip (3), and remove the water valve assembly (4).
NOTE:
- Installation is the reverse of the removal procedure.
- Refill the engine with coolant.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.