Checking the stall speed
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Check the stall speed when checking the line pressure.
The stall speed test gives an indication of the condition of the torque converter, the transmission clutches and the engine.
For the test to be accurate the following conditions must be met:
- the engine must be properly tuned
- the line pressure must be correct
- the oil level in the transmission must be correct and the transmission must be at operating temperature.
NOTE:
Never conduct a stall speed check when the line pressure is too low.