Andrew, the gauge sensor is a simple resistance based device. The sensor changes resistance as a function of temperature and the gauge reads this change in resistance. The light is a different design. So what beef do you have with the gauge? If you have one of those gauges that goes to max when your coolant level goes low than I would fix that problem ASAP. That design was a piece of crap. regards gary --- Andrew Fox <afox@cnr.colostate.edu> wrote: > > It is crap but not just because it is inconsistent. > It is crap because it > is very prone to failure due to a poorly designed > and delicate electrical > system. > > Andrew Fox > > > On Fri, 25 Jun 2004, gary hradek wrote: > > > Ben, > > I have to disagree strongly. The lack of > numbers > > is intentional because numbers are not what is > > important. > > All vanagon users need to calibrate their temp > > gauge. Three points of interest need to be > > calibrated. > > First where is the temp gauge when the > thermostat > > opens completely. > > Second where is the temp guage when the low > speed > > fan kicks on. > > Third where is the temp guage when the high > speed > > fan kicks on. > > Once calibrated any change from these > calibrated > > values should be viewed with extreme suspicion > that > > something is wrong and not with the gauge. > > One other value that cannot be calibrated is > how > > high should the gauge go to while the high speed > fan > > is on going up a hill on a hot day. How high > before > > you turn the heater on to drop the gauge a bit. > > If you loose any coolant you are running the gauge > too > > high? I for one feel the gauge is the most > reliable > > part of the coolant system.. gary > > > > Date: Thu, 24 Jun 2004 13:25:51 -0400 > > From: The corruptor <huotb@VIDEOTRON.CA> > > Subject: Re: head Gasket again!! > > > > The vanagaon temp gauge is crap..... if you want a > > good reading of head > > / > > engine temp, buy a aircool head temp gauge with > > sender. > > > > there is only 2 reasons that the head gasket did > blow > > > > over pressure or bad seal of the gasket. > > > > -bad sealing head side of the gasket, the use of a > > recommended sealant > > is a > > must...also, if the matting (head side) is to flat > ans > > polish, the > > sealant > > won't stick for long.... this surface as to be > rough > > up!!! > > > > -Have a coolant pressure test done > > http://www.benplace.com/pressure_test.htm > > > > This will tell you about head cracks or a coolant > > components failure. > > > > And change that extpansion tank cap. > > > > All outer aftermarket head gasket i have seen are > > close to crap, i > > would > > only use OEM VW head gasket. > > > > Ben > > http://www.benplace.com/vw.htm > > > > > > > > > > > > __________________________________ > > Do you Yahoo!? > > Yahoo! Mail Address AutoComplete - You start. We > finish. > > http://promotions.yahoo.com/new_mail > > > >
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