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Home >> Volkswagen >> 1993 >> Passat GL, 2.0 C, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 4-CYL >> Fuel System >> Cold-Start Valve
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Cold-Start Valve

  1. Disconnect ignition coil power output stage from ignition coil. Disconnect air intake boot from throttle body. Disconnect engine coolant temperature sensor wiring harness connector.
  2. Set Digital Potentiometer (VAG 1360) to 15,000 ohms and connect to coolant temperature sensor wiring harness connector. Remove cold-start valve (injector). Place cold-start injector in container and crank engine.
  3. Cold-start injector must spray uniformly for 6-8 seconds. Wipe off cold-start valve nozzle and observe tip. No drips or dampness may occur within one minute. Replace cold-start injector if it does not operate as specified.
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