Stall Speed Test
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- Perform mechanical system test preparation. (See MECHANICAL SYSTEM TEST PREPARATION .)
- Start the engine.
- Firmly depress the brake pedal with the left foot.
- Shift the selector lever to the D range.CAUTION:
- If the accelerator pedal is pressed for more than 5 s while the brake pedal is pressed, the transmission could be damaged. Therefore, perform Steps 5 and 6 within 5 s.
- Gently depress the accelerator pedal with the right foot.
- When the engine speed no longer increases, quickly read the engine speed and release the accelerator pedal.
- Shift the selector lever to the N position and idle the engine for 1 min or more to cool the ATF.
- Perform a stall test of the M range and R position in the same manner as in Steps 3- 7.
- Turn off the engine.
ENGINE STALL SPEED DESCRIPTION
| Position/Range | Engine stall speed (RPM) |
|---|---|
| D, R, M | 2,100-2,750 |
EVALUATION OF STALL TEST
| Condition | Possible cause | |
|---|---|---|
| Above specification | In all forward ranges and R position | Insufficient line pressure Worn oil pump Poor operation of low clutch Poor adjustment or malfunction of TR switch Oil leakage from oil pump, control valve, or transmission case Pressure regulator valve or pilot valve sticking |
| In all forward ranges | Low clutch slippage Low one-way clutch slippage |
|
| In R position | Low and reverse brake slippage Reverse clutch slippage Perform road test to determine whether problem is low and reverse clutch or reverse clutch
|
|
| Below specification | In all forward ranges and R position | Engine out of tune One-way clutch slippage within torque converter |