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Car Forum / Jaguar Cars / February 2005

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1999 stype heater problem

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work - 10 Feb 2005 14:32 GMT
I have a 1999 s type the heater refuses to put out hat air although the
aircon blows cold I only get cold air when I raise the temperature on the
controls.
Jaguar have said that it requires a thermostat housing at over ?220 plus
fitting.
Anyone know if it is possible to refurb the thermostat , I believe that it
is the control valve ob the lower right hand side of the radiator, there is
a connector feeding what looks like two solenoid valves that someone
suggested may be seized closed and not letting hot water to the heater
matrix in the system.

any ideas please
a cold jag driver
Blake Dodson - 10 Feb 2005 15:03 GMT
Stepper motor valves; I would'nt replace without knowing the controller
is correct.
Blake Dodson - 10 Feb 2005 15:04 GMT
OH. You could always remove the vales and put a hose iin their place
until you get it fixed.
Stuart Adair - 10 Feb 2005 18:30 GMT
Another quality Jaguar part fitted to a new car !!!

>I have a 1999 s type the heater refuses to put out hat air although the
> aircon blows cold I only get cold air when I raise the temperature on the
[quoted text clipped - 10 lines]
> any ideas please
> a cold jag driver
Dsybok - 12 Feb 2005 00:14 GMT
> Another quality Jaguar part fitted to a new car !!!

6 years old is hardly new.

D
Stagman - 24 Feb 2005 16:51 GMT
Have you sorted your heater problem yet?
The sticking thermo causes some strange problems, the engine may well not
overheat due to the high efficiency of the engine (V8) especially with the
current weather.
Thermostats are about ?20 from Jaguar. Mine caused some strange effects a
couple of years ago and today appears to have started sticking again.
Check radiator is hot, this will give you an indication of water flow
through the radiator, but the pipes to it will heat up through heat-soak
so don't be fooled. You will not get much if any heat into the heater
circuit on a day like today.
The heater valve is also known to stick badly. It's best to operate it
from max to min once a week all year round. They cost about ?120.

Best of luck.
Stagman - 24 Feb 2005 16:55 GMT
Have you sorted your heater problem yet?
The sticking thermo causes some strange problems, the engine may well not
overheat due to the high efficiency of the engine (V8) especially with the
current weather.
Thermostats are about ?20 from Jaguar. Mine caused some strange effects a
couple of years ago and today appears to have started sticking again.
Check radiator is hot, this will give you an indication of water flow
through the radiator, but the pipes to it will heat up through heat-soak
so don't be fooled. You will not get much if any heat into the heater
circuit on a day like today.
The heater valve is also known to stick badly. It's best to operate it
from max to min once a week all year round. They cost about ?120.

Best of luck.
 
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