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I am back from a two day ride. We did about 14 hours of driving and the I have an issue with the idling speed that is oscillating. Sometimes it would idle up and down between 1000 and 1500 rpm, other times constant at 750 rpm, sometimes constant at 1000 rpm and sometimes it would idle at a constant 1500 rpm. When the idle speed would oscillate up and down, it seems like the bike wasn't hitting on all cylinders and it sounded horrible.
When running down the road it acts fine and I haven't had any change in my fuel economy. Each time I stop it can be a different speed that it idles at.
Basically, I think that my ECM is pooched and a new one isn't cheap. The cheapest I could find is $649 and of course it is a different part number than a regular Goldwing, so I can't just get a used one.
I am also going to look to see if my O2 sensors are fine. Apparently, they should have a resistance of .86 and 1.1 ohms. That should be easy enough to check.
The other thing I am going to check is to see if the Air Temp sensor that goes into the Air Box is good. One fellow shows a fix that I will try by putting in a 2200 ohm resister ( 1/4 watt is fine). Pull the gas tank and locate the air temp sensor which is plugged into the air box. Strip the wires and place the resister in parallel with the sensor. Solder and tape it up. What this does is fool the computer into thinking the incoming air is hotter than it really is so the ECU will remap a leaner mix. The low end stumble is now gone and that occasional galloping idle will also disappear.
One thing you will want to do is unplug the ECU fuse and turn the ignition on. You can immediately replace the fuse and go for a test ride. The ECU will recalibrate and the change should take place quickly. No need to let it idle until warm as the ECU is designed to remap under normal conditions.
My next thing to see is if a re-flash would work. There are a few places around that do that and I am going to contact them to see what their opinion is.
If any of you guys have any suggestions, please don't hesitate to chime in.
When running down the road it acts fine and I haven't had any change in my fuel economy. Each time I stop it can be a different speed that it idles at.
Basically, I think that my ECM is pooched and a new one isn't cheap. The cheapest I could find is $649 and of course it is a different part number than a regular Goldwing, so I can't just get a used one.
I am also going to look to see if my O2 sensors are fine. Apparently, they should have a resistance of .86 and 1.1 ohms. That should be easy enough to check.
The other thing I am going to check is to see if the Air Temp sensor that goes into the Air Box is good. One fellow shows a fix that I will try by putting in a 2200 ohm resister ( 1/4 watt is fine). Pull the gas tank and locate the air temp sensor which is plugged into the air box. Strip the wires and place the resister in parallel with the sensor. Solder and tape it up. What this does is fool the computer into thinking the incoming air is hotter than it really is so the ECU will remap a leaner mix. The low end stumble is now gone and that occasional galloping idle will also disappear.
One thing you will want to do is unplug the ECU fuse and turn the ignition on. You can immediately replace the fuse and go for a test ride. The ECU will recalibrate and the change should take place quickly. No need to let it idle until warm as the ECU is designed to remap under normal conditions.
My next thing to see is if a re-flash would work. There are a few places around that do that and I am going to contact them to see what their opinion is.
If any of you guys have any suggestions, please don't hesitate to chime in.