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2008 - MX-5 - Transmission/Transaxle

NO.16 JUDDER UPON TORQUE CONVERTER CLUTCH (TCC) OPERATION [SJ6A-EL]



16

Judder upon torque converter clutch (TCC) operation

DESCRIPTION

  • Vehicle jolts when TCC is engaged.

POSSIBLE CAUSE

  • Poor TCC engagement due to either slippage because the TCC piston is stuck or the line pressure is low.

    CAUTION:

    • If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF.

    • TCC slippage, burnt

      • Line pressure low

      • Incorrect throttle position signal

      • Incorrect accelerator pedal position signal

      • Incorrect engine speed signal

      • Incorrect engine coolant temperature signal

      • Incorrect engine torque signal

      • VSS malfunction

      • Turbine sensor malfunction

      • Sensor GND malfunction

      • TCC control solenoid malfunction

      • Control valve body malfunction

    • Torque converter malfunction




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