Updater:  Put a different cap on the expansion tank and drove it on the
highway this morning.  following time table and temps.
  1:30 seconds  80 C
3:00 100C
4:00  Stop for gas
8:00 Resume driving  100C
11:00 103 at 65mph and 80 Degrees F outside air
11-23:00 stable at 103 C.

some in town driving afterward and filled the overflow tank to max(was at
min. but no leaks, so can't explain that) and the temps climbed back to 110
after 10 min of in town driving.

Any clues here?  NO low speed fan so maybe the thermo switch or resistor is
toast.  Don't thik it's the water pump...anyone agree or disagree.

Thanks

Max

At 11:51 PM 7/8/2005, Max Wellhouse wrote:
>Still dealing with 120 C temps in the back hose of the 90 GL after a 15
>minute drive.  Motor warms up too quickly it seems, hangs around 110 for a
>while and then gets to 120(these numbers come fro the VDO gauge, not the
>dash.  The temp needle on the dash is close to the top when the high speed
>of the fan kicks in( not sure if the low speed is working,but I have
>replaced the resistor some years ago) and eventually shuts off and it does
>provide some relief, but only temporary.
>
>I noticed the alternator light flickering a little occasionally when
>starting up cold, and was out of adjustment on the belt, so I replaced it
>and have adjusted it once for stretch and the flicker is still happening
>about a third of the time.  Is it possible that the water pump is starting
>up stiff or in a semi seize state and that's causing the altnernator not to
>spin right off the bat?  this one has got me baffled.  Switched to a know
>good thermostat and expansion cap  System was bled after the T-stat was
>swapped, so I'm kinda ready to switch the pump as a last resort.
>
>Thanks for any suggestions.
>
>DM&FS