Fast tickover AGAIN - Euro4

Fast Eddie said:
Kiwi, that sounds interesting. Can you help a Luddite buy suggesting a source (eBay?) for said resistors and in identifying the plug where they’d go??
Click to expand...

The plugs are sitting on top of the engine just under the ignition coil area, you need to,get the tank off and then follow the wires up from the O2 sensors to the plugs (conveniently labels OX1 and OX2). It’s a really easy job but it’s been one of the biggest improvements for my bike.
 
Last edited:
Gents

I am running the 330 ohm resistors in the signal wires,bought from Jacar, $1.20
I don't have a engine light on the dash.

The only reason was to install the Power Commander on the bike to fix the fueling which Norton or the dealership couldn't achieve.

Changing ecus,throttle bodies, remapping none of it worked .

Power commander has been on for 5000km plus now and not a problem.

i have done what works for me.


Have Norton not got all there issues sorted for the new Euro 4 models ???

Cheers
Paul
 
pingu-nz said:
Have Norton not got all there issues sorted for the new Euro 4 models ???
Click to expand...
Paul, it's the EURO4 spec causing fueling probs on many new bikes. Triumph have a recall for a new map as 40% of new owners of the 1200 twins have had severe stalling problems at idle. I believe the fix suggested on this post isn't to cure a Norton issue but more of a two fingers up to the EURO4 specification.
 
nopdog said:
You only need one of these resistors?
Click to expand...
Both lambda sensors will be monitored so it will be a resistor for each sensor input plus a resistor each for the sensor heaters... 4 resistors in total, and if you are going to remove the lambda sensors from the manifolds then you will also need two bolts to plug the holes.
 
There's got to be another bike that uses the like sensor and receptacle. We find that, we can buy the neat little bypass plug. But since its under the tank, I guess aesthetics aren't an issue.
 
Britfan60 said:
There's got to be another bike that uses the like sensor and receptacle. We find that, we can buy the neat little bypass plug. But since its under the tank, I guess aesthetics aren't an issue.
Click to expand...


kiwi 961 posted the link to Ebay. That's the plug you need for the 961 it matches the plug . The Euro 4 bikes and post 2013 bikes O2 sensors are wired differently according to the schematics. I will post more when I have a closer look.
 
Kiwi961 said:
you need to bridge the 2 wires opposite the clip side of the plug ,they are the sensor wires. I’ll Try and get a picture up. You can buy the purpose built plugs here.

https://www.ebay.com/itm/O2-Oxygen-Lambda-Sensor-Eliminator-Plug-for-Aprilia-ETV-1000-/122803796859

I’ve just used resistors that I bought from Jaycar (electrical enthusiasts shop like radio shack) but I think I might go,for the plugs as a permanent fix because it works so well.
Click to expand...

Kiwi just to confirm we will need two of these plugs, one for each O2 sensor?
Skiddy
 
What I don't understand is that the Lambda sensors are needed for a closed loop control system to ensure optimum fuelling. If the map is trying to make it conform to the low-emission Euro4 regs then I can understand how replacing them with a resistor could bias the fuelling for better performance, but if it has had a decat and an alternate map has been installed it should be fuelled for best performance using the feedback from the Lambda sensors.
 
By faking a fixed Lambda signal the mapping stays as the standard mapping plus whatever change the voltage the resistance makes in the range 0.1V to 0.9V where 0.5V is the ideal mixture , if there is a knock sensor then there is some protection against weak mixture but it will mostly be running standard mapping which should be on the rich side for safety but that really depends on the original mapping and what voltage the resistor gives. So no closed loop feedback as the ECU is blind and no Euro4 compliance either.
 
Does anyone here know what mapping would be best for my euro4 with decat and shorties ? Do I need to do that O2 sensor trick ?
 
Dkluyskens said:
Does anyone here know what mapping would be best for my euro4 with decat and shorties ? Do I need to do that O2 sensor trick ?
Click to expand...

Hi - if it’s got an Omex ECU then it should be :
630.01N31.cal
Long or short aftermarket silencers with or without CATs.
6500101_R1
6500101_R1 V2 Norton Commando Aftermarket Exhaust.OMEX 630.01N31

I was running the next map up for a while which is: 6500102_R1 V2 Norton Dominator Stock.OMEX 630.01N31.cal but since I’ve put the new open pipes on and put the resistor in the O2 plug I’ve gone back to the 101-R1, the dominator one was a bit too rich. The 101 map used to hunt a lot at idle but it’s running sweet now, starts first pop, runs well, no issues.
 
Alright, thank you for the response !
it's a MY2017, so I suppose it's an Omex ECU in there, right ?
Do I need to bypass the O2 sensors ?
 

Similar threads

F
  • Locked
Tickover
2
Replies
37
Views
3,100
Matt Spencer
M
B
  • Locked
Not again!!
2
Replies
36
Views
2,078
B-Stone
B
Back
Top