LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2007 >> CX-7 Touring, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle [Service, Removal & Installation) >> Mechanical System Test >> Stall Test

Stall Test

  1. Perform mechanical system test preparation. (See MECHANICAL SYSTEM TEST PREPARATION .)
  2. Start the engine.
  3. Firmly depress the brake pedal with the left foot.
  4. Shift the selector lever to the D range.
    CAUTION:
    • If the accelerator pedal is depressed for more than 5 s while the brake pedal is depressed, the transaxle could be damaged. Therefore, perform Steps 5 and  6 within 5 s.
    • Perform the test at least 3 times and calculate the average.
  5. Gently depress the accelerator pedal with the right foot.
  6. When the engine speed no longer increases, quickly read the engine speed and release the accelerator pedal.
  7. Shift the selector lever to the N position and idle the engine for 1 min or more  to cool the ATF.
  8. Perform a stall test of the M range and R position in the same manner as in Steps  3 -  7.
  9. Turn off the engine.
    ENGINE STALL SPEED

    Position/range Engine stall speed (rpm)
    D, M 2,800
    R
    EVALUATION OF STALL TEST

    Condition Possible cause
    Above specification In D, M ranges
    • Low line pressure (Line pressure control solenoid malfunction, primary regulator valve malfunction)
    • Control valve body component malfunction (shift solenoid C hydraulic pressure system)
    • C1 clutch slipping
    • One-way clutch malfunction
    In R position
    • Low line pressure (Line pressure control solenoid malfunction, primary regulator valve malfunction)
    • Control valve body component malfunction (shift solenoid E hydraulic pressure system)
    • C3 clutch malfunction (slipping)
    • 82 brake malfunction (slipping)
    In all positions/ranges
    • Low line pressure (Line pressure control solenoid malfunction, primary regulator valve malfunction)
    • Oil pump malfunction
    • Oil strainer clogging
    Below specification
    • Engine lack of power
    • Torque converter one-way clutch slipping