Throttle Valve Control Pressure Check
- Install pressure gauge on transmission line pressure tap. See Fig 1 . Install tachometer on engine. Apply parking brake. Ensure engine is at normal operating temperature.
- Operate engine at 1000 RPM. With gear selector in "P" position, note oil pressure reading. Move gear selector to "D" position, and note oil pressure reading.
- Oil pressure "D" reading must be equal to "P" reading or must not exceed it by more than 10 psi (.70 kg/cm). Operate engine at 1400 RPM. Oil pressure should increase. Adjust throttle valve cable if pressure does not increase. See appropriate TRANSMISSION SERVICING - A/T article in the AUTOMATIC TRANSMISSION SERVICING section.
CAUTION:
DO NOT
perform following pressure tests for longer than 2 minutes or transmission damage may occur.