Temp sending unit for '68

[dardal@xxxxxxxxxxxxxxx]

Mark, that's normal.  They all say below the little rectangular bar, (except 
for my LeBaron's that goes all over the place).  Apparently, there was a 
perception back then that the engine running cold is "good".  And Chrysler 
designed the gages so they show "cold" all the time.

You may want to install a mechanical gage if you want to know what the 
temperature really is.

D^2

Quoting Mark McDonald <tomswift@xxxxxxxxxxxxx>:

> I am having a devil of a time finding a new coolant sending unit for my
> '68.  I hope I am looking at the right part.  If you are facing the
> engine, it is located about 2" to the left of the thermostat, between 2
> heater hoses.  It looks almost like the bottom of a lightbulb with a
> hexagonal collar on it.  Above the collar is a small cylinder with 2
> blade connectors set at right angles to each other.  The dimension of
> the hex collar is 15/16".
> 
> I have gone to 4 different parts stores here and they either don't even
> have a number for this part, or what they do have is way too small. 
> Pep
> boys had it-- according to their computer-- but the part is about 1/3
> the size of the thing on my car.  Is what I am looking at a housing? 
> In
> other words, if I take it apart will I find the sensor inside this
> thing?  I am pretty sure I am looking at the right thing, because when
> I
> disconnect it my gauge goes dead.
> 
> I am trying to replace this because my gauge never gets up to normal. 
> I
> tested the temp of the antifreeze in the radiator and it got up to
> about
> 150 degrees after about 20 min. idling in my drive.  That would seem to
> be close to normal temp (?), but the gauge never moved above about 1/4
> of the way over toward the center.
> 
> I do not think the thermostat is the problem, because when I start the
> engine cold and look in the radiator I do not see instant circulation
> of
> antifreeze, as you would expect with a thermostat that was stuck open.
> So I thought maybe the sending unit was bad . . .
> 
> But I cannot locate a sending unit.  Can anyone help?
> 
> Thanks, Mark
> 
> 
>