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

FUEL SYSTEM <DOHC> -
TSB Revision
Adjustment Procedures
Service
(8) Switch OFF the ignition switch.
(9) If the scan tool was not used, disconnect the jumper wire
from the diagnostic test mode control terminal.
ment of ignition timing, and return the connector to its
original condition.
(11 )Start the engine again and let it run at idle speed for about
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) Plug the bypass passage entrance of the throttle body.
Caution
Be absolutely sure that no cleaning liquid enters the
bypass passage.
(4) Spray cleaning liquid (from the intake port of the throttle
body) onto the valve, and then leave as is for about five
minutes.
(5) Start the engine and race it a few times; then let it run at
idle speed for about one minute.
NOTE
If, because the bypass passage is plugged, the engine
idling speed is unstable (or the engine stalls), let the engine
run with the throttle valve slightly open.
(6) If deposits are not removed from the throttle valve, repeat
steps (4) and (5).
(7) Remove the plug from the bypass passage entrance.
(8) Connect the air intake hose.
(9) 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.
(Refer to P.13-245.)
THROTTLE POSITION SENSOR ADJUSTMEyTmEE
(1) Connect the scan tool to the data link connector (white).