Check engine light after disconnecting o2 sensors - Victory Forums - Victory Motorcycle Forum
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post #1 of 26 (permalink) Old 02-11-2017, 07:41 PM Thread Starter
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Default Check engine light after disconnecting o2 sensors

Hi all, new to the forum and already bringing questions...
So, I disconnected the sensors and got the engine light on the bike, I have a 17' magnum and I cant find anything on the web relating this issue.
Also wanted to confirm that this is not a bad move on my part being that I just reach the 500 mile break in period.!!
I wont stand riding with the light on even if this is not an issue. Please let me know if this common.
Thanks in advance.
Ride safe everybody!!!
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post #2 of 26 (permalink) Old 02-11-2017, 08:29 PM
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You need O2 eliminators for the 16's on up to shut the light off.

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post #3 of 26 (permalink) Old 02-11-2017, 09:38 PM Thread Starter
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Great!!!
I'll start searching for those, in the meantime is fine to run without the eliminators, right?
Thanks for the prompt response.
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post #4 of 26 (permalink) Old 02-11-2017, 10:29 PM
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The ECM is doing exactly what its supposed to. Telling you something is wrong with the engine. At least in its opinion. Everything is programed to have those O2 sensors give feed back to the ECM so it regulates the fuel injection correctly, adjusts the timing, and burns off the bad stuff in the CATS. Once you disconnect them, now the ECM goes "Houston we have a problem" and lets you know by turning on the warning lite. With the O2 disconnected it dumps more fuel than needed, so mileage goes down. Also because you are now putting more "raw fuel" into the cylinders it dont all burn. So you get unburned gas in the Cats, so they run hotter to burn off the unburned fuel. If you punch out the CATs it kind of goes the other way. It leans out, which makes the Cylinders run hot because some of what the fuel does is cool the cylinders.

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post #5 of 26 (permalink) Old 02-11-2017, 11:13 PM Thread Starter
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Ok. So if I understand correctly, this is not a good idea since I pulled the baffles completely out of the exhaust, right?
I apologize if I ask stupid questions, just want to make sure I dont hurt my bike in the long run.
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post #6 of 26 (permalink) Old 02-12-2017, 05:59 AM
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I have a 2017 Highball. I used the plugs supplied by Dobeck. Dobeck plugs are a single capacitor plug for the O2 sensor. Check engine light still comes on after installing plugs. Not sure what the difference is in the 2017's. PC5 has a double capacitor plug for the O2 sensor with their set up and might give them a try.

Last edited by aor98; 02-12-2017 at 06:02 AM.
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post #7 of 26 (permalink) Old 02-12-2017, 06:23 AM Thread Starter
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So I decided to connect them back until I get the plugs, the codes are gone but the check engine light still on. Is there a way to reset it? Or should I wait a little longer and it will disappear? Thanks for letting me know about the dobeck plugs, I thought that they fixed the engine light problem. I guess I'll keep researching.
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post #8 of 26 (permalink) Old 02-12-2017, 06:24 AM
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Quote:
Originally Posted by tcrider View Post
I have a 17' magnum
You have a 17 foot Magnum?
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post #9 of 26 (permalink) Old 02-12-2017, 06:43 AM Thread Starter
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Quote:
Originally Posted by half_crazy View Post
You have a 17 foot Magnum?
Haha. That is funny!!! Any comments on the matter? Other than this?
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post #10 of 26 (permalink) Old 02-12-2017, 06:53 AM
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I have a 3" Magnum ....
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