Quote:
Originally Posted by artur94
I am looking to find out idle air flow ratio in injected version of Zongshen Rx3 2015 model.
I think the throttle body on my bike is made by Continental as written on stepper motor valve.
Over the years I was trying to establish good idle speed (with out good result) and turned the adjusting trotle screw in every location.
I want to start with good air flow ratio and see if this will help.
If the idle speed is to small the engine shut off if idle speed is to high it will trigger the red ( engine symbol ) light at dash board.
At this moment the idle speed on my motorbike is in good range till the cooling fans switch on.
When cooling fans gets switch On the idle speed is slowly dropping down till engine shut off.
When I use hited grips the idle speed is also dropping down and engine shut off
If cooling fans or hited grips get switch off before engine shut off, idle speed will return to normal.
I am not sure if this problem is to do with air/ petrol ratio or this problem is do to some electric faults.
Is the any sensor wich I should change?
Recently I have made upgrade to alternator on my bike from originall one 200W to Zongshen 300W and new regulator.
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It sounds like the ECU is not detecting the increased load on the engine from the electrical system, that is usually done with the MAP sensor, which you have replaced, so I would check the MAP sensor's wiring for continuity from the sensor connector to the ECU. There is a RX3 wiring diagram here:
http://www.rx3adventure.com/images/r..._schematic.jpg
It should help you in identifying the necessary wires and connectors. The MAP sensor is not explicitly listed on the diagram, I believe it is called the "dumping sensor" on the diagram. It's at the bottom of the diagram, next to the ECU J2 connector. It would also be a good idea to examine the idle stepper motor and it's wiring as well, per NzBrakelathes suggestion. It's listed as the idle controlling valve on the diagram, at the top, fourth one over from the right.