Speedo problems - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Speedo problems by dieselherb1 on 14 Jul, 2012 09:23
• Replaced 4 speed trans with 5 speed ACN trans now speedo off by 30% at least. Will a change in gears fix that? Or what can I do?
• #1 by 92EcoDiesel Jetta on 14 Jul, 2012 09:35
• You need to swap the red speedo gear from the ACN to the cable. I swapped from an AVX to ACN and the red gear was spot on.
  
  I had a very stubborn red gear, wouldn't come off. Had to put the old cable in a vise and hammer it off, while the green gear from the AVX yanked off easily by hand.
• #2 by dieselherb1 on 16 Jul, 2012 06:03
• Are you saying remove red gear from cable of the car that the ACN came from? That car has long since been crushed.
• #3 by theman53 on 16 Jul, 2012 07:15
• Buy a new red gear. Ebay had them when I was looking. Yes the gear should get you back to normal.
• #4 by R.O.R-2.0 on 17 Jul, 2012 10:45
• you need to match the speedo gear to the ring and pinion ratio..
  
  red = 3.67
  white/gray = 3.89/3.94
  green = 4.25
  
  if you dont have the right gear for the R&P you are running, then it will never be accurate.