No. 13 Engine Flares Up Or Slips When Upshifting Or Downshifting: Notes

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE FLARES UP OR SLIPS WHEN UPSHIFTING OR DOWNSHIFTING - DESCRIPTION & POSSIBLE CAUSE

13	Engine flares up or slips when upshifting or downshifting
DESCRIPTION	When accelerator pedal is depressed for driveaway, engine speed increases normally but vehicle speed increases slowly. When accelerator pedal is depressed while driving, engine speed increases but vehicle speed does not increase.
POSSIBLE CAUSE	There is clutch slippage because the clutch is stuck or the line pressure is low. Clutch stuck, slippage (Forward clutch, direct clutch, 4GR brake, brake No. 2, one-way clutch No. 0, one-way clutch No. 1, one-way clutch No. 2) Line pressure is low Mis-adjustment of throttle position sensor malfunction Output speed sensor malfunction Input/turbine speed sensor malfunction Sensor ground malfunction Shift solenoid A malfunction Shift solenoid B malfunction TCC solenoid valve malfunction Body ground malfunction Throttle cable malfunction Control valve body malfunction Poor operation of mechanical pressure Selector lever position disparity Transmission range switch position disparity NOTE: Before following the troubleshooting steps, make sure that the on-board diagnosis and basic inspection have been conducted.

Engine flares up or slips when upshifting or downshifting

DESCRIPTION

When accelerator pedal is depressed for driveaway, engine speed increases normally but vehicle speed increases slowly.
When accelerator pedal is depressed while driving, engine speed increases but vehicle speed does not increase.

POSSIBLE CAUSE

There is clutch slippage because the clutch is stuck or the line pressure is low.
1. Clutch stuck, slippage (Forward clutch, direct clutch, 4GR brake, brake No. 2, one-way clutch No. 0, one-way clutch No. 1, one-way clutch No. 2)
  - Line pressure is low
  - Mis-adjustment of throttle position sensor malfunction
  - Output speed sensor malfunction
  - Input/turbine speed sensor malfunction
  - Sensor ground malfunction
  - Shift solenoid A malfunction
  - Shift solenoid B malfunction
  - TCC solenoid valve malfunction
  - Body ground malfunction
  - Throttle cable malfunction
  - Control valve body malfunction
2. Poor operation of mechanical pressure
  - Selector lever position disparity
  - Transmission range switch position disparity
  NOTE:
  - Before following the troubleshooting steps, make sure that the on-board diagnosis and basic inspection have been conducted.