No.6 Low Maximum Speed And Poor Acceleration: Notes

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

LOW MAXIMUM SPEED AND POOR ACCELERATION - DESCRIPTION AND POSSIBLE CAUSES

6	Low maximum speed and poor acceleration
DESCRIPTION	Vehicle acceleration is poor at start. Delayed acceleration when accelerator pedal is depressed while driving.
POSSIBLE CAUSE	If clutch is stuck or does not stay in 4GR, there is a malfunction in engine circuit. Clutch slipped, burned Line pressure low Incorrect throttle position signal Malfunction of VSS Malfunction of input/turbine speed sensor Malfunction of sensor ground Malfunction of shift solenoids A, B, or C Malfunction of body ground Malfunction of control valve body Transaxle fixed in 4GR (Operation of fail-safe function) Short or open circuit in wiring Poor connection of connector Electronic parts of output and input system malfunction are malfunctioning Insufficient starting torque (Suspected when in-gear condition, shift control and engine circuit are normal) Malfunction of torque converter (Poor operation, sticking) Engagement of TCC operation range (Operation of fail-safe function) Malfunction of TFT sensor (Short or open circuit) NOTE: Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.

Low maximum speed and poor acceleration

DESCRIPTION

Vehicle acceleration is poor at start.
Delayed acceleration when accelerator pedal is depressed while driving.

POSSIBLE CAUSE

If clutch is stuck or does not stay in 4GR, there is a malfunction in engine circuit.
- Clutch slipped, burned
  - Line pressure low
  - Incorrect throttle position signal
  - Malfunction of VSS
  - Malfunction of input/turbine speed sensor
  - Malfunction of sensor ground
  - Malfunction of shift solenoids A, B, or C
  - Malfunction of body ground
  - Malfunction of control valve body
- Transaxle fixed in 4GR (Operation of fail-safe function)
  - Short or open circuit in wiring
  - Poor connection of connector
  - Electronic parts of output and input system malfunction are malfunctioning
- Insufficient starting torque (Suspected when in-gear condition, shift control and engine circuit are normal)
  - Malfunction of torque converter (Poor operation, sticking)
- Engagement of TCC operation range (Operation of fail-safe function)
  - Malfunction of TFT sensor (Short or open circuit)
NOTE:
- Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.