[V8] Coolant Sensor?

[dsaad at icehouse.net]

If I had to guess - I would say the level sensor has gone bad in the coolant
tank, or there is a wireing problem to it.

Should be easy to debug - just unplug the sensor and see if the light goes off.
I don't know if the switch is normally open or closed, but with the plug
jumpered the light should be in the opposite state as open.

Dave


Quoting "Stafford, Kenneth A." <stafford at WPI.EDU>:

>
> So, been catching a few comments about a coolant sensor and started to
> wonder
> about a problem my 91 has developed.  Started about an intermittent
> over-heat
> warning in the info display immediately after WOT runs from 65-90 mph
> (second
> gear kickdown--one of my favorite things to do!).  All temps would show
> normal but the display would illuminate for about a minute after each run.
> Now, it comes on about a minute after engine start and stays on all the
> time.
> The reservoir level is full and the water temp runs consistently about 85-90
> degrees (87 degree t-stat).
>
> Another new situation (unrelated?), shortly after engine start I get a
> flashing outside temp indicator on the AC panel.  I know this is a fault
> indication of some sort.  I have had the AC disconnected for some time since
> I replaced the compressor and just haven't bothered to purge/recharge it
> yet.
> (Last time I checked however, it seemed like there was no heated air coming
> out when I called for heat.)
>
> Any hints?  Besides the coolant reservoir level, what other sensors trigger
> the hi-temp warning?
>
> TIA,
> Ken
>
> '91 V8Q
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