Help with AAZ pump wires please - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Help with AAZ pump wires please by ringo on 05 Oct, 2009 01:56
• Hi,
  
  Im a regular on club80-90 in the UK and one of our members (caveman) has put me onto vwdiesel.net as a knowledgeable forum on injection pumps.
  
  I just picked up a 97 AAZ with zero miles on it (the vehicle it was in was written off at the docks on entering the country) and im installing this into my T3 (vanagon).
  
  However, i've got some issues with the pump that came with the engine - in particular the wires coming off it.
  
  Could anyone help me out with the following questions please?
  
  What are the wires in the middle of the injector pipes for? Im not planning to connect them. (the other ones in the black plastic shroud arent there any more as i took the plastic off to leave the single solenoid connection).
  
  
  
  At the bottom of the pump are two more wires in a single black cover (just below the acceleration damper and to the left of the dipstick). I think these are for an immobilizer. Im not planning to connect them to anything. Am i right?
  
  
  
  Whats the black thing for attached to the side of the LDA? Im assuming its an automatic cold start based on a vacuum or something. It has a clear pipe coming out of it.
  
  
  
  Thanks in advance...
  
  Ringo
  
  
• #1 by dokarex on 07 Oct, 2009 04:45
• Is it an AAZ of one of the first TDI's ? those wires and the pump and the steel fuel lines don't look like my 97 AAZ or my 94AAZ in my Doka?
  
• #2 by burn_your_money on 07 Oct, 2009 04:57
• That's a bad pump to use unless you have the computer to go with it. It is an AAZ pump but the timing is controlled by the computer. The 2 wires in the center of the injection lines are a start of injection sensor, and the 2 at the bottom of the pump control a solenoid that controls your advance. Leaving the bottom wires powered will either give you full advance all the time, or no advance. I'm not sure which is which (power = advance or vise versa)
• #3 by Vincent Waldon on 07 Oct, 2009 07:48
• Quote from: burn_your_money on 07 Oct, 2009 04:57

  That's a bad pump to use unless you have the computer to go with it.
  

  
  2X... that's the somewhat-computer-controlled version of the AAZ that came out just prior to the fully computer-controlled 1Z / AHU engine... gonna be really hard to run without the computer.
  
  You can ignore the immobilizer but the timing control will be tricky.