Symptom #5

WARNING: This page is about a different car, the 2002 Jaguar XKR and 2002 Jaguar XK8. However, it is still accessible from the selected car via links, so may be relevant.

Insufficient heating

Possible Source(s):

Coolant flow valve stuck 'closed'
Coolant flow valve stuck 'open' allowing recirculation of coolant at engine idle
Action(s) to take:
- Renew valve

Possible Source(s):

Motorized in-car aspirator seized
Action(s) to take:
- Renew aspirator

Possible Source(s):

Cool air bypass damper stuck open
Action(s) to take:
- Renew check fault code#43

Possible Source(s):

Blocked speed low
Action(s) to take:
- Check / clean / renew

Possible Source(s):

Blower speed low
Action(s) to take:
- Check performance range

Possible Source(s):

Low coolant level
Action(s) to take:
- Adjust as required (verify and correct reason for loss)

Possible Source(s):

Engine thermostat faulty
Action(s) to take:
- Check engine running temperature

Possible Source(s):

Heater water pump seized
Action(s) to take:
- Check Operation

Possible Source(s):

Heater matrix blocked
Action(s) to take:
- Renew matrix

Possible Source(s):

Heater circuit air-lock
Action(s) to take:
- Refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING - VEHICLES WITHOUT: SUPERCHARGER or COOLING SYSTEM DRAINING, FILLING AND BLEEDING - VEHICLES WITH: SUPERCHARGER for fill / bleed procedure.