What is it? - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• What is it? by slorimer on 17 Jan, 2008 08:30
• On a Mk3 Jetta.  Where the upper rad hose goes into the engine, there is plastic fitting which bolts to the block.  There are 2 temperature sensors on one side of the plastic fitting, one for the gauge the other for the glow plug timer.  And on the top side of the plastic fitting there is something else that has 4 pins.  Anyone know what it does?
• #1 by burn_your_money on 17 Jan, 2008 08:40
• picture?
• #2 by Vincent Waldon on 17 Jan, 2008 08:43
• I believe it's the air-conditioning cut-out.... if the engine gets too hot the air conditioning is automatically disabled.
• #3 by zukgod1 on 17 Jan, 2008 09:12
• Quote from: "Vincent Waldon"

  I believe it's the air-conditioning cut-out.... if the engine gets too hot the air conditioning is automatically disabled.

  
  
  No kidding? That's kinda cool...
• #4 by slorimer on 17 Jan, 2008 12:57
• Thanks Vincent, makes sense.
• #5 by Tintin on 18 Jan, 2008 05:37
• The two sensor on the AAZ, like you said the first is for the gauge and glow time, the other is for one of the speed of the cooling rad fan (3speed)