LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Porsche >> 1988 >> 924 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DME Digital Engine Control >> Diagnosis & Testing >> Throttle Switch >> Checking Coasting Fuel Shut-Off
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Checking Coasting Fuel Shut-Off

  1. With engine at idle speed, bridge disconnected plug of idle switch with a jumper wire. Accelerate engine to approximately 1300 RPM. Engine should begin to surge (this is coasting fuel shut off).
  2. If engine does not surge, check wire between idle switch plug and control unit plug for breaks according to wiring diagram. If necessary, replace control unit.
scientia non olet · About LEMON Manuals