Temp guage - what is normal?

[JFP in PA]

Originally Posted by jmatta

JFP, is there any way to increase the accuracy of the gauge; i.e. different sender or such?

I installed the LN low temp t-stat and the gauge reads lower than before, but my impression is that an idiot light would be about as accurate.

Regarding the coolant bleeder...when I changed my coolant, I drove over 250 miles with the valve open and topped occasionally with distilled water; now it's fine and stable.

The temp sender itself is reasonably accurate; it is the dash gauge that is the problem, which does reduce the gauge to little more than an "idiot light". I know of no reasonable way to fix it other than to go to aftermarket units.

We prefer to use a vacuum filling system, 5 min. and the system is ready for years of sealed running..............

[mptoledo]

I agree with jeffs idiot light point, but would add, if you use it as a benchmark, it should always be consistent. Meaning If your car is always at 180, and one day its 190 (unlikely) well you don't know the real temp, but you do know you got a problem. For god sakes what is accurate on the Porsche display? Not the speedometer!!

[jmatta]

what is accurate on the Porsche display? Not the speedometer!!

I'll tell the cop that when I get pulled over...

"Officer, everyone knows how inaccurate Porsche gauges are"...too bad it reads high and not low.

[Lil bastard]

If you have one of the early cars, you can get an accurate coolant temp (°C) reading the climate control unit in diagnostic mode - it's code 6c.

[Paul]

Originally Posted by jmatta

what is accurate on the Porsche display? Not the speedometer!!

I'll tell the cop that when I get pulled over...

"Officer, everyone knows how inaccurate Porsche gauges are"...too bad it reads high and not low.

Doesn't work in Wisconsin, the cop just adds another fine for "driving with a faulty speedometer."