Causes of errors in Engine Tacho System (rpm measuring system).

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Errors in Tacho System (rpm measuring system) cause Engine revolution to fluctuate (hunting). Why does Engine Tacho System may fail?

asked 24 Jun '17, 07:00

June 24, 2017, 7 a.m.
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edited 24 Jun '17, 07:02

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RPM measuring failures may be related to:

  • Sensors misaligned
  • Sensors dirty. Grease and oil accumulated on sensors contain metal particles which disturb signal shape
  • Clearance from the flywheel is too big
  • Short circuit of the sensor wiring to the Engine
  • Electrical errors in the Tacho (RPM pickup) system
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answered 24 Jun '17, 07:12

June 24, 2017, 7:12 a.m.
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