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THERMO Time Switch: Fiat

  1. Disconnect electrical connector from cold start injector. Connect test light between terminals, operate starter and note time test light glows. Light should not glow if coolant temperature is above 95°F (35°C) and should glow for 1-8 seconds at temperatures below 95°F (35°C).
  2. If light does not glow as outlined, check relay and wiring. If good, replace thermo time switch.
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