Mike Lloyd Posted June 28, 2007 Share Posted June 28, 2007 When I connect the VDO OIL pressure gauge up to 12v it reads full scale. The temp and fuel gauge are connected to the same supply and seem to work OK. What am i doing wrong Quote Link to comment Share on other sites More sharing options...
Peter M Posted June 28, 2007 Share Posted June 28, 2007 Make sure that the threads on sender are making earth to the block otherwise you get full scale deflection of needle as in your case. Quote Link to comment Share on other sites More sharing options...
Mike Lloyd Posted June 28, 2007 Author Share Posted June 28, 2007 AHH. PTFE Tape may be my enemy Quote Link to comment Share on other sites More sharing options...
Peter M Posted June 28, 2007 Share Posted June 28, 2007 I used a small amount of ptfe tape on my sender but made sure that it was only on thread towards the actual sender part dont want to get any in oil galleries. Quote Link to comment Share on other sites More sharing options...
lightning Posted June 30, 2007 Share Posted June 30, 2007 Had the same problem with mine then realised the sender has a seperate earthing terminal!! Quote Link to comment Share on other sites More sharing options...
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