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Home >> Toyota >> 1980 >> Corolla Base, 2D Hatchback, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Auxiliary Accelerator Pump System >> Testing >> Auxiliary Accelerator Pump (AAP)
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Auxiliary Accelerator Pump (AAP)

  1. On Corolla with 1AC engine and Tercel models, check that engine coolant temperature is below 122°F (50°C). On Celica, Corolla with 3T-C engine and Pickup models, check that coolant temperature is below 131°F (55°C). 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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