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

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

Answer:

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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