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O2 Sensor Replacement


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#1
mych

Posted 19 April 2014 - 05:08 PM

mych

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Replacing 1 pcs o2 sensor at 220k km. Supposed to be checked at 30k interval and changed at 120k km.
Sensor located at exhaust pipe replaced (Band 2) while engine O2 sensor (Band 1) still ok. Cost RM500 at Bosch Car Service at Kuchai Entrepeneurs Park. Band 2 sensor reading was fluctuating minimally from 0-20 only. Band 1 sensor fluctuates between 50-900.
Mych

#2
Gunnerzz

Posted 05 September 2014 - 07:10 AM

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QUOTE (mych @ Apr 19 2014, 05:08 PM) <{POST_SNAPBACK}>
Replacing 1 pcs o2 sensor at 220k km. Supposed to be checked at 30k interval and changed at 120k km.
Sensor located at exhaust pipe replaced (Band 2) while engine O2 sensor (Band 1) still ok. Cost RM500 at Bosch Car Service at Kuchai Entrepeneurs Park. Band 2 sensor reading was fluctuating minimally from 0-20 only. Band 1 sensor fluctuates between 50-900.

any check light appear on dash?

#3
mych

Posted 15 September 2014 - 04:54 PM

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No check light, but both sensors were overdue for replacement, must say that engine response now is much better..
Mych

#4
mych

Posted 29 November 2014 - 12:09 AM

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Replaced PCV valve and hose as well.. noticed further FC improvement..
Mych

#5
Iskandar

Posted 18 December 2014 - 10:29 PM

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QUOTE (mych @ Nov 29 2014, 12:09 AM) <{POST_SNAPBACK}>
Replaced PCV valve and hose as well.. noticed further FC improvement..


How to tell if the PCV is out?

 


#6
mych

Posted 19 December 2014 - 11:08 AM

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PCV valve should not be oily inside, its fitting to the engine and connection to hoses should be tight.
Its function is to relieve pressure in the engine and allow for evaporated petrol/water vapour from the engine oil to be recirculated and burned..
Mych

#7
mych

Posted 23 December 2014 - 09:41 PM

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The first long highway drive was good. Petrol needle is 2mm from halfway mark and i got 416 on the odo for a 12year old waja.. My best previously was 400km..
Mych

#8
Gunnerzz

Posted 23 December 2014 - 09:44 PM

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QUOTE (mych @ Dec 23 2014, 09:41 PM) <{POST_SNAPBACK}>
The first long highway drive was good. Petrol needle is 2mm from halfway mark and i got 416 on the odo for a 12year old waja.. My best previously was 400km..

Nice...i hope it will improve my fc too when i replace it.