Fuel Injected Models

NOTE: Attach tachometer positive terminal to coil negative terminal. Do not allow tachometer connector to touch ground, or damage may occur to system.

With air cleaner installed, engine at normal operating temperature, all wiring connectors, vacuum lines, pipes and hoses connected and all accessories off, be sure timing is at correct specification.
Set transmission in neutral. Start engine and run at idle. Pinch air valve hose checking to see that engine RPM does not drop more than 50 RPM.
Remove rubber cap from service connector at left front fender. Connect voltmeter positive probe to "VF" and negative probe to "E1" using a pigtail connector. See Fig 1 . Do not damage connector terminals with voltmeter probes.

Fig 1: Idle Speed Service Connections
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Warm up engine at 2500 RPM for about 2 minutes. Voltmeter needle should fluctuate 8 times or more in 10 seconds. If it does not, check fuel injection system and replace oxygen sensor, if necessary.

Set idle speed as specified with idle speed adjusting screw. Voltmeter reading should now be 3-9 volts. If more than 9 volts, check air intake system for leaks. If less than 3 volts, check fuel injection system.

IDLE SPEED

Application	RPM
Cressida & Supra	800