Line Pressure Test
- Ensure transmission fluid is at normal operating temperature. Raise and support vehicle. Place a wood block between distributor housing and firewall to prevent damage to distributor cap when lowering transmission.
- Support transmission with jack. Unbolt cross member and lower transmission to gain access to pressure port. Connect appropriate pressure gauge to line pressure test port on transmission. See Fig 1 .
- Apply service brake and shift transmission to "D" position. Release brake and allow wheels to accelerate to approximately 28 MPH. Allow engine to idle (approximately 1500 RPM). Check line pressure and record pressure reading. Repeat test in "2" and "L" position.
- Apply brakes. Shift transmission to "D" position. Disconnect modulator vacuum line. Depress accelerator pedal to Wide Open Throttle (WOT). DO NOT hold engine at WOT for more than 5 seconds. Check line pressure and record pressure reading. Repeat test in "2" and "L" position. See the LINE PRESSURE SPECIFICATIONS table.
LINE PRESSURE SPECIFICATIONS
| Shifter Position | psi (kg/cm2 ) | |
|---|---|---|
| Idle Speed | ||
| "D" & "2" | 54-63 (3.8-4.5) | |
| "L" | 87-102 (6.1-7.1) | |
| WOT | ||
| "D" & "2" | 100-112 (7.0-7.9) | |
| "L" | 161-177 (11.3-12.4) | |