Supra L6-183 2997cc 3.0L DOHC (2JZ-GE) (1993)
Idle Speed: Testing and Inspection
1. INITIAL CONDITIONS:
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Engine at normal operating temperature
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Air cleaner installed
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All pipes and hoses of air induction system connected
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All accessories switched OFF
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All vacuum hoses for EGR system, etc. should be properly connected.
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SFI system wiring connectors fully plugged
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Ignition timing set correctly
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Transmission in neutral position
2. CONNECT TACHOMETER.
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Connect the tester probe of a tachometer to terminal IG- of the data link connector (DLC1).
NOTICE:
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Never allow the tachometer terminal to touch ground as it could result in damage to the igniter and/or ignition coil.
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As some tachometers are not compatible with this ignition system, we recommend that you confirm the compatibility of your unit before use.
3. INSPECT IDLE SPEED.
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Race the engine speed at 2,500 rpm for approx. 90 seconds.
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Check the idle speed.
Idle speed: 700 ± 50 rpm
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If the idle speed is not as specified, check the IAC valve.
4. DISCONNECT TACHOMETER.