Hey all,

I recently purchased and installed the stainless steel exhaust from Rocky
Mountain Westy. I also got a brand new 3-wire oxy sensor to go with it.
Well, I brought it out for it's first test ride afterwards and there was
some weird hesitation and roaming idle. I took it home and thought that
maybe I was an idiot and forgot to remove the plastic protective cap from
the sensor before installing it. That doesn't seem to be the case now,
because the cap covers the threads of the sensor too, and I know those
weren't covered when I installed.

If I unplug the sensor, it works great. If I plug it in, the hesitation is
gone now, but the idle is not completely stable. It's not all over the
place, but if you watch the needle, you can see it jump up and down just a
hair. I hooked up a voltmeter to the signal wire with the heater wires
connected. With the signal wire connected and the voltmeter on it, it will
be at .45v, then if I give it gas, it will steadly climb. After I removed
the gas and let it sit for a little idling, it started jumping between .1
and .7v, which I think it what it's supposed to do.
With the wire disconnected and a voltmeter on it, it would start at 0 volts
and would climb indefinitely when I gave it gas. I'd have to try it again
and check the numbers.

Does anyone know how to correctly test the sensor? I figured maybe it could
be defective. It's part #13957. If someone could help me get this figured
out, it would be much appreciated. Maybe I had this issue all along, but my
leaky exhaust hid it. Maybe now with a fully working exhaust it's just
rearing it's head.
Thanks a lot!

-p