Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Acura 3.5RL 1996-2004 Approved srm RL9604S11157A
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Main Menu Table of Contents
Intake Manifold Runner Control (IMRC) System
Description
Satisfactory power performance is achieved by closing and opening the intake manifold runner control (IMRC) valves.
High torque at low RPM is achieved when the valves are closed, whereas high power at high RPM is achieved when the
valves are opened.
INTAKE MANIFOLD RUNNER CONTROL INTAKE MANIFOLD RUNNER CONTROL
(IMRC) SOLENOID VALVE 1 OFF (IMRC) SOLENOID VALVE 2 OFF
ENGINE SPEED IS ABOVE 3,200 rpm ENGINE SPEED IS ABOVE 3,800 rpm
IMRC SOLENOID VALVE 2
VACUUM
RESORVOIR From PGM-FI
IMRC
SOLENOID MAIN RELAY
VALVE! From No. 20 ECU
(PCM) (20 A)
FUSE
(in the under-dash
fuse/relay box)
IAC
VALVE
IMRC VACUUM VARIOUS
DIAPHRAGM 1 CHECK SENSORS
VALVE
ENGINE
IMRC
COOLANT
DIAPHRAGM 2
IDLE AIR
CONTROL IMRC
THERMAL
VALVE
IDLE VALVE 1: CLOSED
ADJUSTING IMRC
INTAKE
IMRC
SCREW
INTAKE
AIR VALVE 2: CLOSED VALVE 2
MANIFOLD THROTTLE BODY
DUCT IMRC
DIAPHRAGM 2
IMRC
VALVE 1 IMRC
DIAPHRAGM 1
IMRC
IMRC VALVE 1: OPEN
VALVE 1: OPEN IMRC
IMRC VALVE 2: OPEN
VALVE 2: CLOSED
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