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Home >> Ford >> 1981 >> Courier 2.0L Eng VIN 1 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> DECEL Throttle Modulator >> Testing >> Throttle Modulator Diaphragm Check

Throttle Modulator Diaphragm Check

  1. Disconnect vacuum line from diaphragm. Connect external vacuum source to diaphragm. Apply and trap 19 in. Hg.
  2. If diaphragm does not respond, or will not hold vacuum, replace the diaphragm.
  3. Remove external vacuum source. If the diaphragm does not return within 5 seconds, replace the diaphragm. Reconnect vacuum line.
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