I flushed and bled my cooling system today. 2000 RPMs, bleeder open, front
end up, closed bleeder when there were no bubbles. Took it for a drive to
get it hot and the temps stayed low. Figured everything was alright. Then
went out with wife and child and sat in rush hour traffic. Slowly the temps
started to rise until the red light was flashing. Turned on the front and
rear heat full blast and the temps went down. Drove home. *After* I turned
the key off and was unloading my child, the radiator fan turned ON for
about a minute. I don't think it went on at all while we were driving.
What is going on?  Is this a symptom of something? I know nothing was
clogged before because before I flushed and bled the system I drove it a
good hundred and fifty miles or so, half of that in traffic.
Did I not get out all of the air?
What is that little black knob that the service manual tells you to turn
one way when you bleed it? What does that do? I remember it being
already*open* when I went to bleed the system. Which way should it be? All
the way clockwise or all the way counterclockwise?
Oh yeah, it's a '91 Carat, 2wd, automatic (if that helps).
Thanks,
Joel