How Do You Hook Up the ALFB on the Injection Pump - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• How Do You Hook Up the ALFB on the Injection Pump by VW_Commuter on 02 Jul, 2010 09:18
• Picked up a new to me IP for my 1.6L TD and it has that newfangled ALFB on the side of it and I'm trying to figure out a couple of thing about it.
  
  First, where should it get power from?
  
  Second, what controls when it should get power? According to Jimfoo:
  

  Quote from: jimfoo on 28 Feb, 2008 16:39

  The terminal is to deactivate it to reduce HC when the engine is cold(<60*C) when energized.

  So is there a temperature switch that is used to control the activation?
  
  And last, after the pump is timed should it be energized or de-energized to set the idle?
  
  Thanks
• #1 by Rabbit on Roids on 03 Jul, 2010 09:46
• ALFB? are you talking about the LDA? and are you talking about that electronic timing advance? most leave it un hooked..
• #2 by VW_Commuter on 03 Jul, 2010 22:58
• Yes, the electronic timing advance that's on the side of the injection pump that is opposite to the cold start lever.  I'm just trying to figure out how it works and how to hook it up if it is useful to.
• #3 by Baron VonZeppelin on 04 Jul, 2010 10:34
• The aneroid on top decreases fueling.
  The electronic solenoid on the side decreases inj.timing.
  If i remember correctly from the briefing Vincent gave me.
  
  Its stuff for high altitude compensation.
  Most all disconnect/disable both devices, unless you live/drive way up yonder near the clouds.
  I disabled mine.
  
  Came on 89-92 NA.