Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Model
Stock
Porsche 911
991 : 2011- 4
997 : 2004- 72
996 : 1997-2005 42
993 : 1993-1998 11
964 : 1989-1993 0
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 0
930 Turbo : 1975-1989 1
Early 911 : 1964-1977 1
Porsche Other Models
Classic : 1950-1965 1
Boxster : 1997- 14
Cayman : 2005- 16
Cayenne : 2003- 11
Macan : 2014- 1
Panamera : 2009- 0
912-914-924-928-944-968 6
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Body Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
TTW
Newbie


Joined: 28 Jun 2014
Posts: 36
Location: Midlands

2004 Porsche 997 Carrera 2S

PostPosted: Sun Oct 30, 2016 9:22 pm    Post subject: 997.1 C2S - Heater Problems? Reply with quote

Hi Everyone,

After many many years of wanting a 911, I am recently a proud owner of a 1st Gen Artic Silver 997 S. (YIPEEE)

The only problem I have is that whilst the AirCon could freeze the Nads off a penguin, the heater (or rather lack of?) is extremely poor?. - In essence the engine heats up fine, but very little/none hot air comes into the cabin? - At best, if I crank the temp right up (so that 'HI' displays on the controller), switch on the ECO Button, AND turn the FAN right down/off, then EVENTUALLY (after about 30 mins on the motorway) - luke warm air will start to come through the vents - but if I turn the fan up, then the heat is diluted, and goes cool again; or if switch the air to Cool, then back to warm; the air stays cool.

Has anyone experienced this problem, or can anyone advise what may be the issue?

Thanks in advance
Trevor.[img][/img]
 
  
View user's profile Send private message
   
TTW
Newbie


Joined: 28 Jun 2014
Posts: 36
Location: Midlands

2004 Porsche 997 Carrera 2S

PostPosted: Sun Oct 30, 2016 9:34 pm    Post subject: Reply with quote

Ooops, forgot to include a pic.
 



IMG_3394.jpg
 Description:
 Filesize:  300.48 KB
 Viewed:  1349 Time(s)

IMG_3394.jpg


  
View user's profile Send private message
   
Phil 997
Yas Marina


Joined: 05 Dec 2015
Posts: 8916
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Sun Oct 30, 2016 9:53 pm    Post subject: Reply with quote

Trevor, quick move with the pic nicely done Grin Grin welcome to the forum and 911 ownership.
re your heating issue , it is definitely not right and should be like any other modern car , hopefully someone like demort who is a Porsche tech will be along shortly to give you a steer. as you need to get it done soon before the weather changes. Thumb Grin if you don't hear from him ping him a PM as hes always happy to help. Thumb Grin
_________________
911 Owners,Some Invest In The Future,
Others Enjoy The Moment Today.
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3113
Location: Sussex


PostPosted: Mon Oct 31, 2016 8:21 pm    Post subject: Reply with quote

Welcome Smile

Your problem , it sounds like a sensor fault on the heater system or possibly one of the control flap motors has failed .

My guess would be a temp sensor though , unfortunatly you would need a tester on the car and look at actual values to see which one .

Outside items internal heater flap has failed , broken shaft .. thats not so good so ill not go into that one ..

Actual circulation of the coolant through the heater matrix .. never come accross that before but anything is possible i guess , well not outside of changeing rads and the system hasnt bled through properly .


I could dig up various pictures of the heater system but its not really going to help im afraid .



Either way unfortunatly youll need to get it into a garage so they can have a look .

Edit .. there is a system check which Porsche testers do that activate all the motors .. its possible that might get a stuck one moveing , your local indy will know about it i expect .
_________________
Mechanic

7pm - 9pm
 
  
View user's profile Send private message
   
TTW
Newbie


Joined: 28 Jun 2014
Posts: 36
Location: Midlands

2004 Porsche 997 Carrera 2S

PostPosted: Mon Oct 31, 2016 8:39 pm    Post subject: Reply with quote

Demort wrote:
Welcome Smile

Your problem , it sounds like a sensor fault on the heater system or possibly one of the control flap motors has failed .

My guess would be a temp sensor though , unfortunatly you would need a tester on the car and look at actual values to see which one .

Outside items internal heater flap has failed , broken shaft .. thats not so good so ill not go into that one ..

Actual circulation of the coolant through the heater matrix .. never come accross that before but anything is possible i guess , well not outside of changeing rads and the system hasnt bled through properly .


I could dig up various pictures of the heater system but its not really going to help im afraid .



Either way unfortunatly youll need to get it into a garage so they can have a look .

Edit .. there is a system check which Porsche testers do that activate all the motors .. its possible that might get a stuck one moveing , your local indy will know about it i expect .


Thanks for the response, much appreciated.

The system has been flushed, but didn't resolve the issue, so I'm pretty happy that circulation isn't the problem? - In respect of Sensors, or internal heater flap(s), where could I find some info on these?
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3113
Location: Sussex


PostPosted: Mon Oct 31, 2016 8:52 pm    Post subject: Reply with quote

The heater box assembly has motors on both sides that activate various flaps to direct heat and control which vents to blow through , the heater shut off flap might have stuck or a temp sensor might have failed and so giveing an incorrect value ..

They are not really that accessable and i dont have any listings at home for each motor on the system , ill have a look tomorrow to see which is the heater motor flap control and see if i can come up with a way to check it .



I did a search and came up with this ..

http://rennlist.com/forums/996-forum/897200-need-info-help-on-ac-blowing-hot-air-only.html

This is the opposite of what you have but i now think this is your problem .. its just stuck the opposite way , its for a 996 but will give you an idear .. ill check 997 tomorrow .
_________________
Mechanic

7pm - 9pm
 
  
View user's profile Send private message
   
TTW
Newbie


Joined: 28 Jun 2014
Posts: 36
Location: Midlands

2004 Porsche 997 Carrera 2S

PostPosted: Tue Nov 01, 2016 7:54 pm    Post subject: Reply with quote

Demort wrote:
The heater box assembly has motors on both sides that activate various flaps to direct heat and control which vents to blow through , the heater shut off flap might have stuck or a temp sensor might have failed and so giveing an incorrect value ..

They are not really that accessable and i dont have any listings at home for each motor on the system , ill have a look tomorrow to see which is the heater motor flap control and see if i can come up with a way to check it .



I did a search and came up with this ..

http://rennlist.com/forums/996-forum/897200-need-info-help-on-ac-blowing-hot-air-only.html

This is the opposite of what you have but i now think this is your problem .. its just stuck the opposite way , its for a 996 but will give you an idear .. ill check 997 tomorrow .



Many Thanks Smile - Might replacing the whole Heater Box, for a used one on Ebay be one of the easiest options? (eg. like this one: http://www.ebay.co.uk/itm/GENUINE-PORSCHE-987-BOXSTER-996-997-CARRERA-HEATER-BOX-ASSEMBLY-USED-/151886410879?fits=Car+Make%3APorsche%7CPlat_Gen%3A997&hash=item235d22b47f:g:lNkAAOSwQItUGvEM )
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3113
Location: Sussex


PostPosted: Tue Nov 01, 2016 8:03 pm    Post subject: Reply with quote

Well ... before you go down that route as it requires the dash out and a fair bit of work after that try seeing if the actuator has stuck.

The one you want should be to the left of the clutch pedal and up a bit .. couple of diagrams i got from a training manual might help .

It could also be an interior temp sensor or possibly air intake temp sensor .. only way to check these is with a tester or replacement.

I would start with the actuator though as in the picture you can see how it shuts off the heat supply to the car.

No.16 central flap.
No. 6 top left shows the flap.
_________________
Mechanic

7pm - 9pm
 



heater-1.jpg
 Description:
Right click and view.
 Filesize:  502.59 KB
 Viewed:  1162 Time(s)

heater-1.jpg


  
View user's profile Send private message
   
TTW
Newbie


Joined: 28 Jun 2014
Posts: 36
Location: Midlands

2004 Porsche 997 Carrera 2S

PostPosted: Tue Nov 01, 2016 8:19 pm    Post subject: Reply with quote

Demort wrote:
Well ... before you go down that route as it requires the dash out and a fair bit of work after that try seeing if the actuator has stuck.

The one you want should be to the left of the clutch pedal and up a bit .. couple of diagrams i got from a training manual might help .

It could also be an interior temp sensor or possibly air intake temp sensor .. only way to check these is with a tester or replacement.

I would start with the actuator though as in the picture you can see how it shuts off the heat supply to the car.

No.16 central flap.
No. 6 top left shows the flap.


Your an absolute star!!! worship are you referring to #17 on the diagram.
 
  
View user's profile Send private message
   
Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3113
Location: Sussex


PostPosted: Tue Nov 01, 2016 8:37 pm    Post subject: Reply with quote

Tell you what .. PM me your email addy and ill send you the complete manual ... i thought it was the top one to be honest but as the diagram is off center and for a left hand drive im now confused !!

Its a lot easier when i look under the dash as i can see what im looking at then Very Happy


I think it is 17 but thats at the top and not how the picture looks .
_________________
Mechanic

7pm - 9pm
 
  
View user's profile Send private message
   
TTW
Newbie


Joined: 28 Jun 2014
Posts: 36
Location: Midlands

2004 Porsche 997 Carrera 2S

PostPosted: Mon Aug 07, 2017 10:20 pm    Post subject: Reply with quote

Problem turned out to be Heater Matrix. Fortunately only a 2.5hr job dropping a replacement in under the bonnet (not a dashboard out job) - All sorted & ready for winter now Smile
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 11 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum