Technical Service Bulletin High Idle After Car Warm-Up

Subject: High Idle After Warm-up           Models: 911 SC 1982

Bulletin Number: 83 – 03

To prevent high idle after the warm up cycle at low ambient temperatures, the heating element resistance of the auxiliary air regulator has been reduced from 33 Ohms as of May, 1982

The new version regulator, which has a production date code number of 244 or higher (arrow 1), may be retrofit to earlier vehicles.

high idle 2

Should the engine idle remain abnormally high after the warm up period with the new version regulator, the following modification should be performed.

  • Remove auxiliary air regulator
  • Carefully drive in end cap (arrow 2) exactly 0.5 mm. The distance of 0.5 mm must not be exceeded.
  • Reinstall auxiliary air regulator.
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