• Tiny
  • Ron Mayfield
  • Jaguar

Jag XJ12, 1994, 100K, 6.0L V12.
I just fixed the Tach and now it seems to indicate the rpm's are too high. At 70mph it indicates 4000rpm. Transmission shifts OK, the tach needle drops a bit at the shifts. Idle is around 2000rpm in gear (indicated) and it won't lower when I turn the air ajustment screw in. I recently disconnected the neg battery terminal to try and reset the system. Car starts and runs great, just can't bring the idle down.
Thanks for any help!

Tuesday, November 6th, 2007 AT 6:42 AM

1 Answer

  • Tiny
  • Dave H
  • Expert
  • 13,547 posts

Check for vacuum leaks

Was this
Wednesday, January 6th, 2010 AT 4:02 AM

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