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Home >> Mazda >> 1995 >> MX-3 Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Idle Speed & Mixture >> Idle Speed

Idle Speed

NOTE: Before adjusting idle speed, warm engine to normal operating temperature. Turn off all accessories. Place transmission in Neutral (M/T) or Park (A/T). DO NOT  adjust idle using throttle adjusting screw. Throttle adjusting screw is preset and if adjusted, will adversely affect engine performance.
  1. Connect Diagnostic Tester (49-B019-9A0) to data link connector. Set SYSTEM SELECT to position 1 and TEST SWITCH to SELF-TEST, or connect jumper wire between data link connector terminals TEN and GND. See Figure .
  2. Connect tachometer to data link connector terminal IG (-). If idle speed is not within specification, rotate air adjusting screw on throttle body. See IDLE SPEED SPECIFICATIONS  . Disconnect diagnostic tester or jumper wire from data link connector.
IDLE SPEED SPECIFICATIONS

Application M/T RPM (1) A/T RPM
MX-3 (2) 700 750
(1) Place automatic transmission in Park.
(2) Connect jumper wire between terminals TEN and GRD of data link connector.
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