Please could any kind soul explain which o2 sensor this relates to. Or should I change both of them.
Kind regards, Paul
P0141 Fault Code
Started by
Paulus H
, Oct 06 2017 09:58 PM
10 replies to this topic
#1
Paulus H
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Posted 06 October 2017 - 09:58 PM
#2
The Batman
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Posted 06 October 2017 - 10:16 PM
Post cat lambda
#3
Johnboyhgt
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Posted 07 October 2017 - 08:13 AM
The one after the wheel arch U bend facing towards the rear.
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#4
Paulus H
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Posted 07 October 2017 - 06:19 PM
Many thanks chaps!
#5
Ali87
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Posted 14 October 2017 - 09:18 PM
Try some lambda cleaner first, saved me changing mine
#6
Paulus H
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Posted 28 October 2017 - 05:27 PM
Thanks everyone. Low speed running is much better now thanks. In fact low speed running is much better than before the warning light came on. It must be that a poorly performing sensor does not trigger the warning light unless it more or less shaggered.
Paul
#7
hairy
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Posted 28 October 2017 - 07:15 PM
Try some lambda cleaner first, saved me changing mine
recs for cleaner Ali?
#8
Ormes
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Posted 29 October 2017 - 09:53 AM
Can somebody shed some light on why a shagged post cat lambda would cause rough running?... I appreciate that if it fails the ECUs emmissions check, it will may run in a 'safe' callibration causing rough running... is this the only cause? I would have thought that would be pretty binary though, and trigger the EML?
#9
james4563
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Posted 29 October 2017 - 12:16 PM
Doesn't the sensor have affect on fueling. Hence the poor running?
My friends MR2 turbo had a bad O2 sensor and it was 40bhp down on power on a Dyno. Once replaced engine was so much smoother. I think it was in a safe map, massive overfueling.
Or is that only the precat sensor?
#10
Ali87
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Posted 29 October 2017 - 04:35 PM
I used Wynns catalytic converter and lambda cleaner. 10 quid in Halfords. Worked a treat for merecs for cleaner Ali?Try some lambda cleaner first, saved me changing mine
#11
Ormes
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Posted 29 October 2017 - 05:21 PM
Pre-cat sensor for fueling. Post cat serves only to confirm to what degree the cat is functioning. (So far as I am aware)Doesn't the sensor have affect on fueling. Hence the poor running? My friends MR2 turbo had a bad O2 sensor and it was 40bhp down on power on a Dyno. Once replaced engine was so much smoother. I think it was in a safe map, massive overfueling. Or is that only the precat sensor?
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