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Home >> Toyota >> 1982 >> Pickup Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Auxiliary Accelerator Pump System >> Testing >> Auxiliary Accelerator Pump (AAP)
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Auxiliary Accelerator Pump (AAP)

  1. On Celica and Pickup models, check that engine coolant temperature is less than 131°F (55°C). On Corolla and Tercel models, check that coolant temperature is less than 122°F (50°C). On all models, remove air cleaner and start engine.
  2. Pinch AAP vacuum hose and stop engine. Release vacuum hose and ensure that gasoline spurts out of accelerator nozzle.
  3. Warm engine to normal operating temperature. Pinch vacuum hose and stop engine. Check that gasoline does not spurt from accelerator nozzle. If no problem was found, system is okay.
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