Since it is a 944 are you are getting full heat at times that you don't want
full heat?
I missed a lot of this thread so I don't know if this has been covered yet.
The Heater Control Valve does go bad quite often. You can check it with a
Mity Vac, a hand operated vacuum pump, while the valve is in place. It is
located behind the engine on the 944 and is one of the worst jobs to replace
that
you will ever encounter so don't just jump into replacing it. When German cars
fail they are set to default to the full heat mode.
If it checks out OK and you are getting full heat at times that you don't
want full heat it is most likely a plastic clip at the end of the rod that
operates the Heater door inside the car. Basically you have a door to the
heater
box that is opened by a small motor that is connected to a rod that is
connected to the door. When the system calls for heat the motor kicks in and
opens
the door slightly. The connecting clip often breaks and allows the door to
fully open instead of only partially. The 944 has a climate control setting
where you set the temperature you want so even if you are in Air Conditioner
mode the heat will come on if the car gets too cold.
The motor is located under the dash between the steering column and the
center line of the car on my left hand drive 1988 944 (If I were going to do
this
again I would remove the drivers seat.)
In a very quiet garage and with the key on ( battery charged) turn the
switch for the temperature setting back and forth with your head under the
dashboard. You will hear the motor operate. As I recall I had to remove some
ducting and trim panels in order to reach the motor.
I requires two or three clips at $1 each so replace them all while you are
there.
Jim Werner
> While I'm pushing my luck on the non Healey front, anyone ever have any
> luck
> with the heater control valves in Porsche 944S2s? It appears to be
> electrically triggered but vacuum powered. I gather they go wrong quite
> frequently.
>
> Simon
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Thanks,
Jim Werner
Louisville, KY
**************Start the year off right. Easy ways to stay in shape.
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