[Vwdiesel] Fwd: Temp guage

[William Longyard]

Mark,
An intermittent gauge also maybe a failing printed circuit on the back of 
the gauge cluster.  See my post to Terry.

Bill Longyard


----- Original Message ----- 
From: "The President" <quantum-man at hotmail.co.uk>
To: <vwdiesel at vwfans.com>
Sent: Thursday, July 19, 2007 3:04 PM
Subject: Re: [Vwdiesel] Fwd: Temp guage


>
> 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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