passat 1.9td problem with rpm(conversion from none to with rpm counter) - Troubleshooting - VWDiesel.net The IDI, TDI, and mTDI source.

• passat 1.9td problem with rpm(conversion from none to with rpm counter) by carrizog60 on 19 Jan, 2010 05:23
• i have a passat ecodiesel with 1.9td engine, with no rev counter from stock
  i purchased one tach with rev,with the same number in the back as the one the wagon has but the reading is wrong
  at idle its ok i guess but has i rev it the reading shows much more than it is...
  what could it be?
  could the ones with rev counter used different alternator?