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Home >> Geo >> 1990 >> Prizm Base, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Fuel System >> Fuel Control >> Cold Start Switch
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Cold Start Switch

  1. With engine temperature at less than 95°F (35°C), disconnect cold start switch Brown connector, located below distributor. Using an ohmmeter, ensure resistance across cold start switch terminals is 20-60 ohms.
  2. Ensure resistance between Black/White wire on cold start switch and ground is 20 ohms or less. Replace cold start switch if resistance is not as specified.