OzSTOC
Honda ST1300 Section => Ask A Tech about your Honda ST1300 => Topic started by: HunterTodd on October 30, 2019, 08:16:48 PM
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Hi All
Does anyone know of an alternative part number for the o2 sensors on the ST1300.
The genuines are ridiculously expensive.
Cheers
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Here is a start..
Seems like anything might work
https://www.ebay.com/b/NGK-Motorcycle-Oxygen-Sensors-for-Honda-ST1300/177998/bn_20876768 (https://www.ebay.com/b/NGK-Motorcycle-Oxygen-Sensors-for-Honda-ST1300/177998/bn_20876768)
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What symptoms do you have that indicate oxygen sensor problems?.
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Just for interest - item 13 and 14 here https://www.partzilla.com/catalog/honda/motorcycle/2004/st1300a-a-st1300a/muffler (https://www.partzilla.com/catalog/honda/motorcycle/2004/st1300a-a-st1300a/muffler)
Took me a while to find them so I just did a search. Exhaust system; didn't expect that.
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Thanks for assistance guys. I was hoping there was a non genuine alternative because even from Partzilla they are prohibitively expensive.
The reason for my question is a unsuccessful 18 month quest to find a mystery vibration which comes in about 4000 rpm and ends up tripping both knock sensors. The bike is running hot as well. It is definitely not bike frame related. My best educated guess is the bike is leaning out but the usual vacuum leaks fuel pressure issues has been extensively tested and every thing is within specs.
Sensors all check out, CPU has been on Honda software twice. Only thing I haven't considered is O2 sensors which are a critical part of the system.
I came across an article about o2 sensors on V8 car engines which often have two like the ST does. If one is crook depending on the how the fuel map is set up it can lead to one bank being fueled differently to the other and hence engine vibration. I am clutching at straws and hoping like hell this might be the issue with my bike.
My research has also found that o2 sensors cause way more problems than people realise and a lot of people allegedly in the know reckon they are prone to failure in engines with more than 80 to 100 thousand kays on them. My bike is in the sweet spot for that.
Long story short I have just received my you beaut Chinese O2 sensor tester and hopefully will know more on the weekend when I hook it up. I am praying it highlights an issue one of the sensors. You will hear the woo hoo from your place if it does.
Finally the only thing I haven't had apart are the reed valves in the pair system. Apparently they become gummed up but I doubt they are the cause of the issue. Any comments?
Cheers,
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Very interested to hear your experience with this problem. I have a similar (not same) problem with the knock sensor error. I have tried changing the knock sensor cables but no joy. but I would love to have a solution to the error.
BTW: I dont get any vibration, just the FI light and a drop in power when over 4200rpm for more than a few seconds.
Allan
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funny my issue started when i replaced the knock sensor.
I suspected i must have damaged or dislodged something in the process but have checked multiple times the entire system.
Replaced all the vacuum hoses tee etc.
Have replaced spark plugs and leads
Check coil winding and spark. Cleaned and flow tested injectors. Fuel pressure but not flow.
Balanced starter valves three times.
Hoping it is the o2 sensor now.
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Maybe the new knock sensor is faulty?
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good point. Didnt consider that. Thinking on the run wouldnt the ecu richen the mixture if it detected a knock.
Will check it out.
Thanks