Idle Speed Setting - Acura 3.5 RL Manual

Idle Control System

Idle Speed Setting

Inspection/Adjustment
NOTE:
• Before setting the idle speed, check the following
items:
— The MIL has not been reported on.
— Ignition timing
— Spark plugs
— Air cleaner
— PCV system
• (Canada) Depress the parking brake pedal. Start the
engine, then check that the headlights are off.
1. Connect a OBDII scan tool (see page 11-40) or
tachometer.
• Connect a tachometer to igniter unit secondary
loop (white-taped).
TACHOMETER
• Remove the rubber cap from the tachometer
connector and connect a tachometer.
TACHOMETER
CONNECTOR
RUBBER
CAP
2. Start the engine. Hold the engine at 3,000 rpm with
no load (in Park or neutral) until the radiator fan
comes on, then let it idle.
3.
4.
5.
TACHOMETER
BATTERY
Disconnect the IAC valve connector.
If the engine stalls, start the engine with the acceler-
ator pedal slightly depressed. Stabilize the rpm at
1,000, then slowly release the pedal until the engine
idles.
Check idling under the following conditions: head-
lights (Hi) and rear defogger on, blower fan, radia-
tor fan, and air conditioner are not operating.
Idle speed should be:
480 50 rpm
(in Park or neutral)
Adjust the idle speed, if necessary, by turning the
idle adjusting screw.
NOTE: After adjusting the idle speed in this step,
recheck the ignition timing (see
If it is out of spec, go back to step 4.
IAC VALVE
section 4).
IDLE ADJUSTING SCREW