1995 Toyota Paseo AutomaticFACTORY OEM SERVICE PROCEDURE

Except Calif.

  1. Install tachometer. With engine coolant less than 176Β°F (80Β°C), remove air intake hose from throttle body.
  2. Start engine. Place finger over air valve port in throttle body to block airflow. See Fig 1. Engine speed should decrease noticeably. Remove finger from air valve port.
  3. Allow engine to warm to normal operating temperature. Place finger over air valve port to block airflow. Engine speed should not decrease more than 50 RPM.
  4. If engine RPM does not respond as indicated, check for vacuum leaks or restricted auxiliary air valve circuit. If no defects are found, replace auxiliary air valve, located on bottom of valve body.
Fig 1: Checking Typical Auxiliary Air Valve (Except Calif.)
G92H27430Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.