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). Throttle adjusting screw is preset and if adjusted, will adversely affect engine performance.

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 .
Connect tachometer to data link connector terminal IG (-). If idle speed is not within specification, rotate air adjusting screw on throttle body. Refer to the IDLE SPEED SPECIFICATIONS table. See Fig 1 . If idle speed is too high with air adjusting screw closed, loosen lock nut and turn throttle adjusting screw. Disconnect diagnostic tester or jumper wire from data link connector.

Fig 1: Adjusting Idle Speed

Courtesy of MAZDA MOTORS CORP.

IDLE SPEED SPECIFICATIONS

Application

M/T RPM

⁽¹⁾ A/T RPM

RX7 ⁽²⁾

720

⁽¹⁾	Place automatic transmission in Park.

⁽²⁾	Connect jumper wire between terminals TEN and GRD of data link connector.