Resistance values of fuel level sender? - Troubleshooting - VWDiesel.net The IDI, TDI, and mTDI source.

• Resistance values of fuel level sender? by erice1984 on 02 Sep, 2010 22:39
• Anyone know the resistance values from Empty to Full regarding fuel level?
  
  I don't have a gauge and am going to make one using a micro controller.  Just thought if someone knew I wouldn't have to go pull mine out and test it.
  
  Thanks
• #1 by erice1984 on 03 Sep, 2010 22:38
• Didn't think anyone knew this.
  
  Well I pulled mine out (1980 Rabbit diesel)
  
  I left my notes in the garage but I think I remember writing down that:
  
  50 ohms = full
  
  270 ohms = empty
  
  EDIT: I am positive those are the correct resistances but not 100% sure that 50ohms = full and 270ohms = empty  they could be reversed.
• #2 by Vincent Waldon on 03 Sep, 2010 22:43
• Thanks for posting... 'cause yeah... it's one of those unpublished things.  VW uses a special test box #1301 that is *not* calibrated in ohms.   
  
  Having said that, I did find this link one day that provides some clues as to how it maps:
  
  http://www.bentleypublishers.com/tech/vw/bentley.vw1301.testing.htm
  
  The table near the bottom of that page lines up with what you measured...groovy !!