Throttle Body (Throttle Valve Area) Cleaning; Throttle Position Sensor Adjustment - Mitsubishi 1989-1993 GALANT Service Manual

FUEL SYSTEM <SOHC-8 VALVE> - Service Adjustment Procedures 13-35
nsor connector
329.)
ten minutes; check to be sure that the idling condition is
normal.
THROTTLE BODY (THROTTLE VALVE AREA)
CLEANING
engine coolant reaches 80°C (176°F) or higher; then stop
the engine.
(2) Disconnect the air intake hose at the throttle body side.
(3) Spray cleaning liquid (from the intake port of the throttle
body) onto the valve, and then leave as is for about five
minutes.
(4) Start the engine and race it a few times; then let it run at
idle speed for about one minute.
NOTE
If the engine idling speed is unstable (or the engine stalls),
let the engine run with the throttle valve slightly open.
(5) If deposits are not removed from the throttle valve, repeat
steps (3) and (4).
(6) Connect the air intake hose.
(7) Using the scan tool, erase the diagnostic trouble code, or
disconnect the battery's ground cable for ten seconds or
longer and then reconnect it.
(8) Adjust the basic idle speed (engine speed adjusting screw).
(Refer to P.13-33.)
(9) Adjust the throttle position sensor.
THROTTLE POSITION SENSOR ADJUSTMEiW&
Caution
The adjustment of the throttle-position sensor should be
made after completion of the basic idle-speed adjustment.
(1) Connect the scan tool to the data link connector (white).
(2) If a scan tool is not used, perform the following operation.
use the special tool (test harness) between the discon-
nected connector.