turbo spools down when I shut down - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• turbo spools down when I shut down by trent77 on 18 Apr, 2008 21:57
• Even when I let the car set about 30 seconds at idle, the turbo still spools down when i shut the car off. I have not noticed this in any of my previous turbo diesels.  I just don't like the turbo moving after oil has been shut off. It's a 94 aaz. thanks for any input
• #1 by truckinwagen on 18 Apr, 2008 22:18
• the turbo will be turning as long as there are exhaust gasses coming from the motor, so even at idle the turbo is spinning fairly fast, and it will take a moment or two for it to come to a stop after you turn off the motor.
  I wouldn't worry as there is still plenty of oil present for the moment of spinning after the oil feed is cut off.
• #2 by haybayian on 19 Apr, 2008 06:30
• Quote from: "trent77"

  Even when I let the car set about 30 seconds at idle, the turbo still spools down when i shut the car off. I have not noticed this in any of my previous turbo diesels.  I just don't like the turbo moving after oil has been shut off. It's a 94 aaz. thanks for any input

  
  
  This was of concern to me too. Starving the turbo is I believe the greatest risk we face (yes, yes, not everyone agrees).  My solution (which I concede is extreme) was to set up the turbo with its own lubrication system, i.e oil can, filter, electric pump and oil radiator as well as an oil pressure and oil temperature dumb lights. If you look at my posts you will find a discussion of the subject as well as pictures.
  
  Good luck.
  
  Haybayian
• #3 by foxracer1 on 19 Apr, 2008 08:25
• If it's just coasting there no way it will damage its self due to lack of oil. If it spins that long its because the turbo is in good shape.
• #4 by Baxter on 19 Apr, 2008 09:42
• Surely going to the expense of fitting the turbo with it's own lube system is more expensive that the Turbo itself?
  Seems a tad pointless to me.
   :?
• #5 by haybayian on 19 Apr, 2008 10:27
• Quote from: "Mr Brick-Yard"

  Surely going to the expense of fitting the turbo with it's own lube system is more expensive that the Turbo itself?
  Seems a tad pointless to me.
   :?

  
  
  The cost of the whole system was  around $375 (from memory). My turbo cost three times that.
• #6 by spencebm on 19 Apr, 2008 10:44
• listen to foxracer!
• #7 by bert on 19 Apr, 2008 11:34
• mine spins at shut down,nothing to worry about,just be more concerned about good quality oil,good filters,and regular changes  :wink:
  Bert
• #8 by trent77 on 19 Apr, 2008 17:14
• thanks everyone. I appreciate all the input. My little aaz is running very well and I wanted to keep it that way! I'm still a bit disappointed with the fuel mileage though, only around 36-39mpg. I figured dropping it into an a2 would have gotten me above 40. Tires are good, and it doesn't spoke when I accelerate, but I can live with it no matter what. thanks again.
  Trent