So, I have been running my 87 Westy for the past few days with my O2 sensor
unplugged because it idles a little smoother with it unplugged, on account
of a tiny exhaust leak. I've run it like that before with no problems at
all. Well, today on my way home from work, the idle started getting really
rough at stopped lights and almost dying. I was able to pull into a parking
lot before it completely died. In the parking lot I turned it off and then
started id back up. The idle was still rough and the exhaust reeked of gas.
I plugged the O2 back in and it ran fine the rest of the way home.
Any explanation on that? I thought that if it was unplugged it just ran at
the default settings. Is that not right?
Thanks for the help!

-p