Porsche 964 3.6 litre the heat sensor on No 3 cylinder how do you replace it

A lot of issues with that 4.8, customer of mine replaced o2 sensors, 300 or 308 are present also must look after them first Possible fault causes
- Valve(s) of a cylinder stay jammed in large stroke
- Valves of different cylinders stay jammed in large stroke -parity check error

the coolant temp is measured by the cylinder head temp sensor , located under intake manifold



this is for the 3.9 litre on the left bank , the 3 litre is on the right bank

depending on the type there is a motor or magnetic pin system. motors can fail and the magnetic pin type well they can rust up or even the grease in them can freeze up and stop movement. also on some models there is a auto mode this will activate the spoiler at certain speeds. these are prone for failure, for some reason they stop reading the speedo , then in auto or in manual it will not work. also in cold weather you should have it turn'd off... this is recommended from porsche something about only use in above temps of 6.0c 42.8F is minimum low temp. the temp sensor on some turn off the spoiler controls at this speed or a faulty temp sensor not reading the right temp will do this.

There should be a cap you can lift at the base of the stalk, it will or will not show a nut to loosen.

hello there
in your case ,most likely you need to replace the belt sensor which rides on the belt it self...
let me know if this helps?
Proporsche

hi rough running or not firing on all cylinders try tapping the injectors with a spanner a i had the same problem and it was asticky injector put inj cleaner inn fuel tank for nxt 3 fill ups no more problems

Hello there
On passenger side under the dash is a relay for operating the rear spoiler.
The part number is 964 618 212 00.
This could be most likely your problem.
ivan
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reset computer

On the 2.4 litre engine it is mounted on the cylinder head.
On the 3.4 litre engine it is mounted under the throttle body near the area where the transmission and engine meet.
Both sensors are held in place by one bolt.