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CAT excavator 374D rough running /misfire

Junior Lee ยท 2025-08-25 03:23

Hello All, i have problem with excavator 374D S/n PAS00850, the excavator has bad misfire when engine primary timing sensor connected, however there is no any other active codes .... please help me to solve this problem

Replies4
  1. #1Nige2025-08-25 04:19

    I assume that you have a Code for the primary speed/timing sensor.? Please supply details of that Code.

  2. #2Junior Lee2025-08-25 04:26

    Actually there is no any code came out when engine timing primary sensor connected, however when the sensor disconnected the active code 190-8 came out

  3. #3Nige2025-08-25 05:00

    I assume that you have already replaced the primary speed/timing sensor with no change in symptoms.? The attached may be of some assistance. Note carefully the paragraph regarding the LED self-diagnostics for the Machine ECM. It may pay you to check them.

  4. #4Junior Lee2025-08-25 05:48

    Thanks Sir