1997 Lexus SC 300 AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Controls - Adjustments: Dashpot

Warm engine. Ensure idle speed is 650-750 RPM. While fully extending dashpot rod with a screwdriver, check engine speed. If engine speed (dashpot set speed) is not within specification, rotate dashpot adjusting screw as necessary. See DASHPOT SET SPEED SPECIFICATIONS table.

DASHPOT SET SPEED SPECIFICATIONS

Application Dashpot Set RPM
SC300
A/T 1400-2200
M/T 2200-3000
Factory Service Tools

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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.

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