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wibbaboo
Monza


Joined: 18 Nov 2014
Posts: 201
Location: Bristol

2003 Porsche 996 Carrera 2

PostPosted: Fri Mar 17, 2017 8:37 pm    Post subject: Cabin temperature sensor replacement. FIXED Reply with quote

So.. I took the car out for a spin today... When I started her up the aircon (in Auto mode) went on full blast with cold air blasting ...even after 5mins driving... No change..
I could only reduce the blowers by increasing the temp control to 29.5 ... And then it only dropped by 3 lines on the control.
In manuel mode it's the same story... Only hot air when on "hi"


The only way I could get ANY warm air was to put the control to "hi".

So it's as if the car thinks the cabin is really hot and needs to cool me down?

No other symptoms... No loss of any fluids obvious or electrical issues.

Any suggestions gratefully received.

Last edited by wibbaboo on Fri Mar 24, 2017 7:20 pm; edited 1 time in total
 
  
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Demort
Estoril


Joined: 21 Mar 2015
Posts: 3502
Location: Sussex


PostPosted: Fri Mar 17, 2017 9:48 pm    Post subject: Reply with quote

Probably the interior temp sensor has failed .. need a tester to prove it though on actual values .

N/s/f behind the round grill .
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wibbaboo
Monza


Joined: 18 Nov 2014
Posts: 201
Location: Bristol

2003 Porsche 996 Carrera 2

PostPosted: Fri Mar 17, 2017 9:59 pm    Post subject: Reply with quote

Many thanks Dermot
 
  
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deckster
Newbie


Joined: 12 Jul 2015
Posts: 30



PostPosted: Sat Mar 18, 2017 9:25 am    Post subject: Reply with quote

Yep that was exactly what mine was doing. Dead simple to change the sensor and fixed the problem immediately.

Note that there are two sensors in the cabin - one on the passenger side dash, which is easy to change, and one behind the A/C console which is a pain in the bum to get to. The easy one - that fixed it for me - is one of these

http://www.ebay.co.uk/p/GENUINE-PORSCHE-986-BOXSTER-996-C2-4-INTERIOR-TEMP-SENSOR-99665324100/647377015

The one behind the A/C console is different

http://www.design911.co.uk/fu/prod12459/Cabin-Temperature-Sensor-Porsche-Boxster---Cayman---996---997-1H0907543A/

so make sure you get the right one.
 
  
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skinny_monkey
Spa-Francorchamps


Joined: 16 Sep 2014
Posts: 318



PostPosted: Sat Mar 18, 2017 11:25 am    Post subject: Reply with quote

If it's a 3.4 I think one of the readouts on the air-con panel is your interior temp. Can't remember which one but should be easy enough to find the list
 
  
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wibbaboo
Monza


Joined: 18 Nov 2014
Posts: 201
Location: Bristol

2003 Porsche 996 Carrera 2

PostPosted: Mon Mar 20, 2017 9:01 am    Post subject: Reply with quote

Thanks all..

@deckster - I've ordered the easy one to change - is this behind the passenger side air vent? My first time taking any of the dash apart - anything i need to be aware of?
Dont know
 
  
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deckster
Newbie


Joined: 12 Jul 2015
Posts: 30



PostPosted: Mon Mar 20, 2017 10:40 am    Post subject: Reply with quote

Nothing that I can think of. Three (Torx) screws to take it out, disconnect the old one, reconnect the new one, screw it back in. Job done.

http://workshop-manuals.com/porsche/911_turbo_cabriolet_(996)/f6-3.6l_turbo/heating_and_air_conditioning/cabin_temperature_sensor/switch/component_information/service_and_repair/procedures/page_2858/
 
  
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wibbaboo
Monza


Joined: 18 Nov 2014
Posts: 201
Location: Bristol

2003 Porsche 996 Carrera 2

PostPosted: Fri Mar 24, 2017 7:47 pm    Post subject: Reply with quote

Thanks Deckster.

You gave me the confidence to replace the temperature sensor.... And it FIXED the problem. thumbsup

I forgot how effective and quiet the aircon is when working. I celebrated with an hour drive... Just to check everything was working Wink

(Now I'm a mechanic ... Perhaps Baz can employ me... Question )
 
  
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deckster
Newbie


Joined: 12 Jul 2015
Posts: 30



PostPosted: Sat Mar 25, 2017 9:43 am    Post subject: Reply with quote

thumbsup Nice one. Particularly for the...um...mechanically disinclined like us, fixing something yourself is a great feeling.

I'd love to get stuck in and replace my exhausts and engine mounts like you see some people on the forum doing, but realistically I'm never going to have those skills. So taking small victories where we can is the way forward Very Happy
 
  
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