Line Pressure Test
- Ensure transmission fluid is at normal operating temperature. Check fluid level and add if necessary. Connect appropriate pressure gauge to line pressure test port on transmission with 90 degrees fitting to clear exhaust. See Figure.
- Connect tachometer to vehicle and ensure it is visible to driver. Block all 4 wheels and fully apply parking brake. Start engine and ensure idle speed is adjusted to specification.CAUTION: DO NOT maintain stall speed RPM for more than 5 seconds. Ensure at least a 30 second pause at idle between tests.
- Apply service brake and shift transmission to "D" position. Check line pressure at idle and record pressure reading. Accelerate vehicle to stall speed and record line pressure reading.
- Repeat test procedure in "R" position. If line pressures are not as specified, check throttle cable adjustment. Adjust throttle cable (if necessary), and repeat test procedure and record pressure readings. Compare all readings to specification. Refer to the LINE PRESSURE SPECIFICATIONS table.
LINE PRESSURE SPECIFICATIONS
| Engine Speed | "D" Position psi (kg/cm2 ) | "R" Position psi (kg/cm2 ) |
|---|---|---|
| Idle Speed | 53-58 (3.7-4.1) | 79-86 (5.5-6.1) |
| Stall Speed | 136-156 (9.5-11.0) | 188-233 (13.2-15.7) |