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Home >> Toyota >> 1981 >> Corolla Tercel SR5 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Fuel Delivery >> Throttle Positioner System >> Testing >> Speed Sensor
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Speed Sensor

Connect a vacuum gauge to the hose between TP and VSV, using a Tee fitting. Place the gauge in the passenger compartment and road test the vehicle. Vacuum gauge should indicate zero below 7 MPH, and manifold vacuum above 16 MPH.

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