Section : Electrical Equipment

Electrical help needed 

Posted By : Adrian Lee, 14-May-2004, 09:02am

• Electrical help needed 

  Posted By : Chris Mills, 14-May-2004, 09:57am

  Try taking a temporary lead from the sensor to the gauge ( gauge out of the car if you can ), you will have to earth the gauge body and this should identify the problem.
  
  The gauge is usually earthed via the metal backing of the dash and the mounting bracket

  • Electrical help needed 

    Posted By : Adrian Lee, 14-May-2004, 03:03pm

    Thanks Chris,i'll give it a try.

    • Electrical help needed 

      Posted By : John Davies, 14-May-2004, 06:58pm

      Adrian,
      How's the fuel gauge?
      Unless the sensor has gone, the problem is usually the voltage stabiliser that supplies both. If you can get a voltmeter on the supply from the stabiliser, it should wobble about at 10V.
      John

      • Electrical help needed 

        Posted By : Adrian Lee, 14-May-2004, 07:35pm

        Fuel gauge is fine............i'll try a rewire.......I hate 12 volt car electrics.....many thanks to all for your help....keep you posted.

      • Electrical help needed 

        Posted By : Adrian Lee, 14-May-2004, 07:36pm

        Fuel gauge is fine............i'll try a rewire.......I hate 12 volt car electrics.....many thanks to all for your help....keep you posted.

        • Electrical help needed 

          Posted By : Adrian Lee, 15-May-2004, 06:41pm

          All becomes clear....just been informed by owner that the rad is hot at the top and cold at the bottom,temp ok when at speed with the thermostat out!!!!!!!!!!!(could have told me that before)!!!!!!!!!!!!..............water pump methinks

          • Electrical help needed..baffled now? 

            Posted By : Adrian Lee, 17-May-2004, 09:01am

            New rad,good pump,system flushed and back flushed with chemic,no stat,water runs through the system like a stream,no air locks,heater working,temp gauge in the red after 1 min driving.Stop,take cap off no hiss ,water not boiling.
            Different sender unit and gauge wired direct to battery ,straight to red.Previous owner of 6 years says it's always been like that(really helpful).It's just been tuned and we all believe it to be a genuine 50,000 mile engine.Any ideas?Please?
            
            PS.I would'nt drive without the temp gauge working properly either!

            • Electrical help needed..baffled now? 

              Posted By : Charlie Spencer, 17-May-2004, 01:28pm

              Sounds like the Voltage Stabalizer is at fault, had the same problem on mine. GOOD LUCK.

            • Electrical help needed..baffled now? 

              Posted By : David Rumens, 17-May-2004, 09:20pm

              If you are connecting directly to the battery and not by the voltage stabiliser unit then this may well be the problem as this will place a higher voltage on the gauge and make it read higher.
              
              Other points is the gauge the correct type for the 2 Litre, is the gauge working correctly and is the voltage stabiliser working correctly.
              
              Dave

              • Electrical help needed..baffled now? 

                Posted By : Adrian Lee, 17-May-2004, 10:43pm

                After testing the stabiliser,a la John, days ago,that is found to be the problem,however, new pump etc,etc will not go amiss,i have no bleeding idea about voltage stabilisers,fortunatley the lecturer at the local college has.
                
                Thanks to all who helped.
                
                one must listen to those who know best,one must listen to those who know best,one must listen to those who know best,
                
                Thanks again

  • Electrical help needed 

    Posted By : David Rumens, 14-May-2004, 07:12pm

    Chris, you do not have to earth off the gauge body for the temp to read. Gauge body earths are generally there to provide a circuit for the bulb.
    

• Electrical help needed 

  Posted By : David Rumens, 14-May-2004, 07:06pm

  I agree sounds like the lead between the Temp Gauge and Sensor is shorting down to earth some where.