1982 Plymouth Sapporo Automatic TransFACTORY OEM SERVICE PROCEDURE

Throttle Opener Operating Speed

  1. Connect tachometer to engine and warm engine to normal operating temperature. Set engine idle speed to specifications. Turn air conditioner and accessories off. On front-wheel drive models, disconnect engine cooling fan.
  2. Activate throttle opener (air conditioning "ON") and adjust throttle opener speed to operating speed RPM by turning throttle opener adjusting screw. See Fig. 1. 
  3. With throttle opener speed set to specification, turn air conditioner "OFF" and recheck idle speed. Normal engine idle speed should not be affected when throttle opener is not activated.
    THROTTLE OPENER SPECIFICATIONS

    Application Operating Speed (RPM)
    1.4L & 1.6L Engines
      Man. Trans. 800-900
      Auto. Trans. 850-950
    2.0L & 2.6L Engines 850-950
    Fig 1: Chrysler Corp. Imports Throttle Opener System
    G09315593Courtesy of CHRYSLER GROUP, LLC
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

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

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

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.