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Home >> Isuzu >> 1992 >> Impulse RS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Thermostatic Air Cleaner (TAC) >> Temperature Sensor Check
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Temperature Sensor Check

  1. With engine temperature less than 86°F (30°C), place a thermometer inside air cleaner as close to sensor as possible. Reinstall air cleaner cover. Start engine, and let idle.
  2. Damper door should close immediately. If it does not, check vacuum hoses to sensor from throttle body and to vacuum motor from sensor. If vacuum hoses and vacuum motor are okay, replace sensor.
  3. Observe when damper door opens snorkel passage. Remove air cleaner cover, and note thermometer. Temperature should be approximately 131°F (55°C). If temperature is not as indicated, replace sensor.
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