2010 Big Dog Bulldog "Will not stay running" O2 Sensor Code

[WoMbaT[DA]]

Sounds

So does the 02 read at idle? I guess yes because it threw a code. Code is caused by 3 simple moves... say you forgot to connect the connectors and they are hanging apart. Say a wire is hanging out of the connector on one side of the jobber's connector or the main harness. And the last variable is a short or ding-ding-ding... Jobber out of spec.


Either the 02 reads a manifold leak and sees it is too lean and the 02 sets the code being out of spec, it can read a lean, yes or no?

So are we down to two variables? Either the leak tells the 02 to match lean to rich, or the 02 is out of spec and throws a code. However, there is no lean and we rule that out. If say the 02 is 'out of spec' it can't be the connectors not connected, or wires out of connector.

Black box coverts to Alpha, better known as 'limp/fail-safe/backup/Huston we have a problem'. The processor uses a formula and that is the alpha, better known as 101.3/1 atm/760mmHg/14.7psi. Black box reads the same digital number as the input. That means it's a digital out is the fail-safe. No codes means, analog in, or many. Digital means one. So in goes the digital number is Alpha = 14.7 is the binary read.

WATT does it all mean? It's how to determine if you have a good known part and check specs against the book's vaules, not throw parts at it. This is how you determine a computer part or said jobber that is in code:
1. Are we connected? Yes = No code.
2. Is a wire out of the connector ends? No No code.
3. Is it out of spec or shorted to ground is the jobber (a sensor). Yes = codes.

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If the bike takes off like a rocket, it means the injectors are not dirty. It means the fuel pump is fine too. If it loads up with an 02 code, it might go rich [safe], meaning, better to cool it off rich and heat it up lean. So say the backup on an 02 code is rich the bitch...

Only a fresh set of plugs knows for sure.

Sounds good. I just put new plugs in it. Going to go over the fueltank and injectors this weekend. I really appreciate the knowledge your bringing to the table. Wish I was on the same level... I will keep all of this in mind going forward

 

[Sven]

I wouldn't pass up the intake leak test. A code can say the 02 could be fine, chase that lean and go 'out of spec' trying to match the sniff. So the leak would act as a constant or a digital signal, ping the extreme number, and at the same time, act the digit, not the many. It's the very first suck way before the carb/injector and changes the input/fuel pulled.

That's the beauty of FI. Carb goes lean with less fuel pulled and falls on its face. FI is the fail-safe helper that triggers automatically. The leak throws the backup for safety. The leak sends in the same input over and over, it locks the sensor to read 0? No. It would be wire out, or a disconnect. 00000 would be the input. But there is a completed loop for the black box to read the sensor. So it's always reading 1. As in 1111111111111 as a single [digital] signal. If it was in analog with no leak, it would read 101010001001011 and no code. Sensor is not the problem, the leak goes digital.

Make sense diagnosing a good known/working sensor vs. connected/wire out/short to ground/out of spec/stuck digitally with a leak- is the deeper trouble-tree guesswork? I mean, it sounds like it would work like this. Took me years to figure this shit out on my own, so I just came up with this tonight. I thank Rider64 and dedicate this post to his laundry list of leaks all at once, and guess what she said?

 

[awg]

Did you ever the Bagger up and running?