all possible, but check a) for hailine cracks in your expansion tank,
the one inside under the engine lid - let bus idle till hot if present
will bubble or ooze from fracture lines. or B) replace defective sensor
- ~$10 at bus depot

a good bleeding never hurt either.

mike
87 westy (BTDT)

Mike Hugill wrote:
>
> OK
> Any ideas would be appreciated.
>
> My 88 Wolfsburg runs fine, but once it gets warm (15 or 20 minutes of
> driving), strange things happen. First, the coolant temp gauge goes wacko,
> showing high temp, then swings down to cold temp, then back to high temp,
> sometimes stopping at normal temp.  Sometimes the little red light starts
> then blinking but then it stops.  On 2 occasions, coolant overflowed from
> over heating.  The system coolant level seems fine.  This scenerio only
> happens sometimes.
>
> Is there air in the system?
> water pump going?
> thermostat shot?
>
> Thanks,
> Mike
>
> Michael Hugill
> Ken Leiner Associates, Inc.
> Nationwide Recruiting
> (301) 933-8800 x139
> (301) 933-8808 fax
> (800) 989-8803
> http://www.ITsearch.com