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Old 04-26-2018, 10:50 AM   #19
ThinkPad
 
Drives: Yaris XP9 1.3 '06
Join Date: May 2016
Location: The Netherlands, Europe
Posts: 28
Bit of a late reply. I ordered a set of 'defoulers' (link).

I can't get the O2 sensor off, it seems very stuck. Strange thing is that the sensor before the cat was easy to get loose (just for trying, nothing else as the defouler needs to be placed on the second sensor). So i'm sure the direction (lefty loose) is correct. I unclipped the connector, put the wire through the ring spanner, put the ring spanner on the nut. Tried hammering on the end of the spanner, but no movement :(

Also i'm not sure if i have enough free space between the sensor and other parts (transmission, manual in my case) for the defouler(s) to fit. Seems quite tight space.

Does anyone have pictures of the defouler(s) fitted on his/her Yaris?
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Fuel consumption (95 octane): /

Last edited by ThinkPad; 04-26-2018 at 11:00 AM.
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Old 01-06-2019, 10:42 AM   #20
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Drives: Yaris XP9 1.3 '06
Join Date: May 2016
Location: The Netherlands, Europe
Posts: 28
We still have a P0420 error message on our Yaris 2006 sometimes. It only appears when you drive at a constant speed of around 80-100kph it seems.

Have tried before to place a 'defouler' but i couldn't get the second lambda sensor loosened. But it also won't fit i guess, as the sensor is mounted at a weird angle which doesn't give much room for the defouler.

Have recently let Torque log via OBD during a 20 minute highway ride. I filtered the output in Excel at engine rpm> = 3000 so that I only have the highway piece.

Both sensors (upstream & downstream) in one graph:

(Click for big picture)

Both sensors separately:

(Click for big picture)

When I look at the combined graph, I think: hmmm the 2nd sensors fluctuates a lot. But if I look at the graph of downstream separately, then I think: it is not too bad, value is fairly constant.

Is there someone who can say something about the condition of the catalytic converter?
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Yaris XP9 'Sol' 2006 - 1.3 2SZ-FE (Europe)
Fuel consumption (95 octane): /

Last edited by ThinkPad; 01-06-2019 at 11:48 AM.
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Old 02-01-2019, 06:01 AM   #21
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Drives: Yaris XP9 1.3 '06
Join Date: May 2016
Location: The Netherlands, Europe
Posts: 28
Nobody?
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Fuel consumption (95 octane): /
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