[Vwdiesel] Fwd: Temp guage

[The President]

Terry the gauge may come back on. On my Quantum the gauge sometimes doesn't 
come on when I start the car. Driving along and it may start up or it may 
not. IIRC turning off  the ignition sometimes helps. The frequency varies 
from once every couple of months to once a week. Right now it had been 
several months since the last failure. That one was a little disconcerting 
because I was travelling down the motorway at speed 85 ish and it suddenly 
as I watched it began to drop from a little above normal to zero. For a 
split lifetime  [second in reality] I thought it was a total loss of coolant 
but then I remembered the fault. Although in a heatwave the way t o check 
everything normal is to open the hot air vents. ... Normal hot air so I 
relaxed and carried on driving.  I guess in reality coolant loss will 
redline the gauge and not let it drop down. What I need, is to be calm when 
I panic :o)

I must investigate the fault as I 've seen the same fault  on other vw's.
There is a mini computer there somewhere isn't there?

Regards
Mark

>From: fudny at aol.com
>To: vwdiesel at vwfans.com
>Subject: [Vwdiesel] Fwd:  Temp guage
>Date: Thu, 19 Jul 2007 15:33:35 -0400
>
>
>It is pouring out so my test for now is off. But from the replies I'll do 
>the short to ground tonight to test the gauge, my fuel gauge operates fine, 
>the high water temp/level LED operate fine, lights, glow plug indicator and 
>clock are fine. I should have mentioned the car.
>
>85 Jetta 2 Dr. NA diesel
>
>Thanks all
>
>Terry
>
>-----Original Message-----
>From: fudny at aol.com
>To: vwdiesel at vwfans.com
>Sent: Thu, 19 Jul 2007 10:27 am
>Subject: [Vwdiesel] Temp guage
>
>
>
>
>This morning my temp gauge never moved. I drive about 63 miles each way and
>scary to see it still pegged all the way to the left. Ambient temps around 
>70.
>So before I leave work today I'll check the sending switch with a meter. So 
>the
>question is which of the sending units are for the gauge 1) the water 
>outlet on
>the left side of the block or 2) the one on the front?
>
>Do the gauges ever fail suddenly as last night going home all was fine and 
>I
>check the wires after I was on the freeway this morning and both are 
>connected??
>I have to change my speedo cluster out soon as I have the oil pressure 
>buzzer
>issue, the trip odometer broke (487K) and now maybe the gauge.
>
>So before I drive it I would like to meter the sending unit and before I 
>hit the
>interstate check it again when?I know it is warmed up.
>
>Thanks - Terry?
>
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