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
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
992 : 2019- 1
991 : 2011- 18
997 : 2004- 80
996 : 1997-2005 33
993 : 1993-1998 4
964 : 1989-1993 2
Carrera 3.2 : 1983-1989 3
Carrera SC : 1977-1983 1
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 0
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 25
Cayman : 2005- 16
Cayenne : 2003- 2
Macan : 2014- 4
Panamera : 2009- 0
912-914-924-928-944-968 2
959 - CarreraGT - RaceCar 0
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 & 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 [992] 2018-Current
Porsche 911 [992]
911 [991] 2011-2019
Porsche 911 [991]
911 [997] 2004-2012
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
9xxnick
Monza


Joined: 29 Jul 2014
Posts: 186



PostPosted: Mon Jul 01, 2019 11:30 am    Post subject: Oxygen / lambda sensor failure symptoms and lifespan Reply with quote

My car ('94 C2) has 110K miles on it now and has developed an intermittently hunting idle and slight loss of power.

The Bosch diagnostic tool is reporting that the Oxygen sensor is open circuit so I have a Bosch replacement on order.

I'm curious to know if it is fairly typical for these sensors to fail at this kind of mileage on 993s and whether anyone's had similar symptoms.

Equally, if anyone thinks I'm barking up the wrong tree that'd be good to know too.
 
  
View user's profile Send private message
   
ollster
Montreal


Joined: 10 Jun 2009
Posts: 543
Location: Sheffield


PostPosted: Tue Jul 02, 2019 12:17 pm    Post subject: Reply with quote

mine failed in a similar way (at about 115k) and was much smoohter on part throttle when replaced with a new item
 
  
View user's profile Send private message
   
decgraham
Barcelona


Joined: 17 Sep 2008
Posts: 1360
Location: Spain


PostPosted: Tue Jul 02, 2019 12:58 pm    Post subject: Reply with quote

Hi,

In the Bosch lambda catalogue they say that they are good for 160000 Kms or around 100000 Miles.

If you have poor idle you might want to give the ISV (Idle Stabiliser Valve) a clean, Jackals write up below Thumb

http://www.jackals-forge.com/lotus/993/993_60k_isv.html



ATB Smile
_________________
1995 993 C2 Cab TipS in Guards Red
 
  
View user's profile Send private message
   
Cameltoe & Heel
Barcelona


Joined: 26 Jan 2009
Posts: 1335
Location: Preston - Lancs


PostPosted: Tue Jul 02, 2019 1:23 pm    Post subject: Reply with quote

These are usually interesting to get off so let us know how you get on.

Trev
 
  
View user's profile Send private message MSN Messenger
   
9xxnick
Monza


Joined: 29 Jul 2014
Posts: 186



PostPosted: Tue Jul 02, 2019 4:17 pm    Post subject: Reply with quote

Thanks chaps. The ISV has been cleaned, as has the MAF sensor, so hopefully these are OK.

I'll let you know how I get on with the O2 sensor.
 
  
View user's profile Send private message
   
9xxnick
Monza


Joined: 29 Jul 2014
Posts: 186



PostPosted: Wed Jul 03, 2019 5:33 pm    Post subject: Reply with quote

Well, the old sensor is moving freely on its thread after a light application of Kroil and a little bit of encouragement with a rubber mallet on the end of a 22mm spanner. New unit should arrive tomorrow, so hopefully we will have a result soon.
 
  
View user's profile Send private message
   
9xxnick
Monza


Joined: 29 Jul 2014
Posts: 186



PostPosted: Sun Jul 07, 2019 7:56 pm    Post subject: Reply with quote

The new sensor's fitted and seems to be working perfectly. The idle is stable and performance seems to be restored.

Next job: work out why the allegedly standard new gearbox mount has created a lot of additional noise, vibration and harshness....
 
  
View user's profile Send private message
   
Gwsinc
Newbie


Joined: 04 Sep 2019
Posts: 2



PostPosted: Fri Sep 06, 2019 8:37 am    Post subject: Reply with quote

I replaced my O2 sensor last month at 25 years old and 58000 miles. It had a few bashes in it, I guess from its last engine out job.

Running even better now..

In response to the last comment about your gearbox mount, how are your engine mounts? Your newly firmed up gearbox mounts might be exposing old rubber/loss of fluid in the engine mounts? Just a thought!
 
  
View user's profile Send private message
   
kingroon
Silverstone


Joined: 15 Oct 2013
Posts: 125



PostPosted: Fri Sep 06, 2019 9:11 am    Post subject: Reply with quote

9xxnick wrote:
The new sensor's fitted and seems to be working perfectly. The idle is stable and performance seems to be restored.

Next job: work out why the allegedly standard new gearbox mount has created a lot of additional noise, vibration and harshness....

Great result.. Thumb

Could you post a link to the new O2 sensor..? Will be good to keep in my "993" Browser Favourites for future reference..!
_________________
Hasta Luego..
KingRoon

1994 993 Carrera Coupe
 
  
View user's profile Send private message
   
9xxnick
Monza


Joined: 29 Jul 2014
Posts: 186



PostPosted: Fri Sep 06, 2019 9:42 am    Post subject: Reply with quote

This is it: https://www.carparts4less.co.uk/p/bosch-lambda-sensor-710330045

They often have discount offers on, giving 20% or so off.
 
  
View user's profile Send private message
   
kingroon
Silverstone


Joined: 15 Oct 2013
Posts: 125



PostPosted: Fri Sep 06, 2019 9:45 am    Post subject: Reply with quote

Fantastic..! Thanks Cool Even better with the code WEEKEND17 Thumb
_________________
Hasta Luego..
KingRoon

1994 993 Carrera Coupe
 



2019-09-06 10_44_08-My Basket - Car Parts 4 Less UK’s No.1 for Car Parts.jpg
 Description:
 Filesize:  38.52 KB
 Viewed:  420 Time(s)

2019-09-06 10_44_08-My Basket - Car Parts 4 Less UK’s No.1 for Car Parts.jpg


  
View user's profile Send private message
   
cableguy
Watkins Glen


Joined: 10 Sep 2007
Posts: 2008
Location: North Yorkshire


PostPosted: Fri Sep 06, 2019 10:02 am    Post subject: Reply with quote

Currently £79.37 (Bosch) at Eurocarparts with the WEEKEND37 code. Wink

C.
_________________
Pork!
 
  
View user's profile Send private message
   
9xxnick
Monza


Joined: 29 Jul 2014
Posts: 186



PostPosted: Fri Sep 06, 2019 7:40 pm    Post subject: Reply with quote

Carparts4less and Eurocarparts are the same company. Carparts4less seem to be a little cheaper some of the time but always worth checking both.
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 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 cannot attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum