Upstream oxygen sensor?

1. Andyt Established Member Joined: Dec 2003 Stirling United Kingdom (Scotland) Posts: 2268 16v powered furio.

   #1 4th January 2006, 22:18

   Hi guys i hope you can help me here. After getting the car it's 3rd service at citroen last month they told me that said sensor was knackered...the engine management light is also on.
   
   Is the sensor they are on about just one of the lambda sensors in the manifold? If so which one? And is it an easy job to replace yourself?
   
   I have basic knowledge and am willing to have a crack as usual.
   
   The car in quesion is a 52 plate saxo vtr.
   
   Thanks, Andy
2. Ratty Established Member Joined: Jun 2003 United Kingdom (England) Posts: 1682

   #2 4th January 2006, 22:44

   could be the second one by the cat, just a case of replacing it
3. Simop Administrator Joined: Dec 2002 Warrington Posts: 20561 Blue Saxo VTS Turbo/White Megane F1 R26

   #3 4th January 2006, 22:59

   If its the upstream sensor it will be the one upstream (before) the cat... The one after the cat would be downstream.
   
4. Ratty Established Member Joined: Jun 2003 United Kingdom (England) Posts: 1682

   #4 4th January 2006, 23:29

   10 points
5. Andyt Established Member Joined: Dec 2003 Stirling United Kingdom (Scotland) Posts: 2268 16v powered furio.

   #5 5th January 2006, 13:39

   Excelent. So it'll be the one that goes in through the top of my downpipe.
6. Andyt Established Member Joined: Dec 2003 Stirling United Kingdom (Scotland) Posts: 2268 16v powered furio.

   #6 13th January 2006, 21:57

   Ok guys, i've purchased and fitted the "upstream oxygen sensor" (cost = £45 )
   
   My only problem is that the engine managment light is still on. Do i need to get this reset by a garage or is there maybe something else wrong somewhere?