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Idle Speed

CAUTION: Some tachometers may not be compatible with ignition system. Consult tachometer manufacturer before connecting tachometer to system. DO NOT  allow tachometer terminal to become grounded as damage to ignitor and/or coil may exist.
  1. Engine must be at normal operating temperature. Adjust idle speed with air cleaner installed, choke fully open, all accessories off, electric cooling fan off (if equipped), transmission or transaxle in Neutral, and all emission system vacuum lines connected.
  2. Connect tachometer to proper terminals. See Figure. Adjust idle speed to specification. See the IDLE SPEED SPECIFICATIONS  table below. Use idle speed adjusting screw to obtain correct specification. See Fig 1.
IDLE SPEED SPECIFICATIONS

Application Idle RPM
Auto. Trans. 900
Man. Trans. 700
Fig 1: Idle Speed & Idle Mixture Adjusting Screw Locations - Tercel
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