temp guage (gage) dead

Temp guage was acting funny. For awhilw it would read normal at running
temp then it would read "zero" or stone cold. Periodically back to normal
then fluctuating back to resting position. Now it's seems totally dead.

Replaced sending unit, no change. Once in a blue moon it will read normal
but less than 5% of the time.

Fluid is topped up. Doesn't seem characteristic of a bad thermostat. What
gives?

On the '62 Chev, the temperature gauge system is quite simple.... not a '62
Chevy?? Then I guess we need some more info. I will apologize in advance for
my brashness... Systems have changed greatly since the birth of the
Explorer..... the birthday of yours may mean a difference in diagnostic
procedure.


"cK" > wrote in message
. ..
> Temp guage was acting funny. For awhilw it would read normal at running
> temp then it would read "zero" or stone cold. Periodically back to normal
> then fluctuating back to resting position. Now it's seems totally dead.
>
> Replaced sending unit, no change. Once in a blue moon it will read normal
> but less than 5% of the time.
>
> Fluid is topped up. Doesn't seem characteristic of a bad thermostat. What
> gives?
>
>

Sorry I forgot to mention it's a '95.

"Jim Warman" > wrote in message
news41Fd.83419$dv1.59927@edtnps89...
> On the '62 Chev, the temperature gauge system is quite simple.... not a
'62
> Chevy?? Then I guess we need some more info. I will apologize in advance
for
> my brashness... Systems have changed greatly since the birth of the
> Explorer..... the birthday of yours may mean a difference in diagnostic
> procedure.
>
>
> "cK" > wrote in message
> . ..
> > Temp guage was acting funny. For awhilw it would read normal at running
> > temp then it would read "zero" or stone cold. Periodically back to
normal
> > then fluctuating back to resting position. Now it's seems totally dead.
> >
> > Replaced sending unit, no change. Once in a blue moon it will read
normal
> > but less than 5% of the time.
> >
> > Fluid is topped up. Doesn't seem characteristic of a bad thermostat.
What
> > gives?
> >
> >
>
>

cK wrote:
> Temp guage was acting funny. For awhilw it would read normal at
running
> temp then it would read "zero" or stone cold. Periodically back to
normal
> then fluctuating back to resting position. Now it's seems totally
dead.
>

That's interesting. I have a 95 Explorer doing the exact same thing.

I'm convinced that it's an intermittent short or loose connection
somewhere. The gauge is constantly jumping up and down from zero to
normal. When it goes down to zero, my check gauge light comes on.