3 Lambda sensors failed
22-12-2006, 06:37 PM
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3 Lambda sensors failed
Over the past 4 months I have had 3 lambda sensors fail, Im running closed loop on my 4x4 saff, stage 3. Does anyone have any idea what could be causing the failures? Also what does the managment do under closed loop conditions if the lambda is not returning the correct signals?
23-12-2006, 08:45 AM
#4
Too many posts.. I need a life!!
The most likely cause is becuase you are running rich all the time. O2 sensor do not like it, their job is to stop it happening. However, if the mapping is too far out the O2 sensor can not do it's job properly.
23-12-2006, 10:35 AM
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Originally Posted by JTECHSAFF
bit weird that.... im sure if the lambda fails it would revert back to the standard map...on Stu's chip would still be about 0.90% c.o at idle 
ive got a spare genuine lambda if you want to try it mate....?
ive got a spare genuine lambda if you want to try it mate....?
23-12-2006, 10:37 AM
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Originally Posted by Wardy257
The most likely cause is becuase you are running rich all the time. O2 sensor do not like it, their job is to stop it happening. However, if the mapping is too far out the O2 sensor can not do it's job properly.
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23-12-2006, 10:50 AM
#8
Too many posts.. I need a life!!
Originally Posted by trevCOSS
Originally Posted by Wardy257
The most likely cause is becuase you are running rich all the time. O2 sensor do not like it, their job is to stop it happening. However, if the mapping is too far out the O2 sensor can not do it's job properly.
23-12-2006, 10:59 AM
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Originally Posted by xr4x4rs
im sure if a lamda sensor fails it runs rich
are they genuine lamdas or aftermarket?
if aftermaket could be the heat destroying them
are they genuine lamdas or aftermarket?
if aftermaket could be the heat destroying them
23-12-2006, 11:01 AM
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Originally Posted by Wardy257
Originally Posted by trevCOSS
Originally Posted by Wardy257
The most likely cause is becuase you are running rich all the time. O2 sensor do not like it, their job is to stop it happening. However, if the mapping is too far out the O2 sensor can not do it's job properly.
23-12-2006, 08:18 PM
#13
Ive used the LS02 sucessfully on cars that have now covered over 30000 mile without incident, many of them are members of PF too, so you should be fine with that one. 
When we made this system we tried lots of cheapo brand sensors and all had teh same problem, early failure.
When we made this system we tried lots of cheapo brand sensors and all had teh same problem, early failure.
23-12-2006, 08:21 PM
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I got the part number from B9KOS sensor which came from you origionally I think stu so I knew it would be a good bet to get one of them, on a side note my wasted spark coil pack driver arrived today (i won it on ebay) so i have something to do on christmas day! solder it into my ecu 
23-12-2006, 08:22 PM
#15
Originally Posted by trevCOSS
I got the part number from B9KOS sensor which came from you origionally I think Stu so I knew it would be a good bet to get one of them, on a side note my wasted spark coil pack driver arrived today (i won it on ebay) so i have something to do on christmas day! solder it into my ecu
If you have any problem at all, let me know, happy to help you mate.
30-12-2006, 03:46 PM
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Hi Stu
All fitted, bit of a rev counter problem and also I have sent you a PM about the instructions, other than that excellent, also have fitted my bosch LS02 and so far so good.
All fitted, bit of a rev counter problem and also I have sent you a PM about the instructions, other than that excellent, also have fitted my bosch LS02 and so far so good.
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