Escort L4-98 1.6L SOHC VIN 5 FI (1985)
17.
Operate the actuator to make sure the solvent is purged from the idle by-pass valve.
18.
Disconnect the actuator from the idle air by-pass valve.
19.
Reattach the control signal lead to the air by-pass valve.
20.
Check engine for normal operation. It may be necessary to reset the idle speed due to a previous adjustment for an idle concern. (Refer to the
respective Powertrain/Emissions Diagnosis Service Manual, Throttle Body Section, for idle speed adjust procedure.)
Procedure # 2 Idle Air By-Pass Valve Cleaning Only
CAUTION: THIS CLEANING PROCEDURE MAY BE USED WITH SLUDGE TOLERANT THROTTLE BODIES WHICH ARE IDENTIFIED
WITH A YELLOW/BLACK "ATTENTION" LABEL AND THOSE USING SERVICE KIT (F2PZ-9F939-A). NO ATTEMPT SHOULD
BE MADE TO CLEAN THROTTLE BODY BORE/PLATE AREA BY DIRECT SPRAYING OR SCRUBBING. DO NOT RUN
VEHICLES WITH AIR FLOW METERS DURING CLEANING PROCEDURE.
1.
Plug the actuator into the connector in the Rotunda Air By-Pass Valve Adapter 113-00009, or equivalent.
2.
Remove the air duct to the throttle body inlet.
3.
Disconnect the idle air by-pass valve signal lead.
4.
Attach the actuator harness plug to the idle air by-pass valve.
5.
Start the actuator and then start the engine.
NOTE:
DO NOT START ENGINES THAT HAVE AIR FLOW METERS.
6.
Spray the Carburetor Tune-up Cleaner for about five (5) seconds into the idle air by-pass valve inlet passage while the actuator is operating.
CAUTION: AVOID DIRECT SPRAYING ON THROTTLE PLATE/BORE AREA.
7.
Stop the engine and actuator. Let everything soak for fifteen (15) minutes.
8.
Start the actuator and the start the engine.
CAUTION: DO NOT START ENGINES THAT HAVE AIR FLOW METERS.
9.
Spray Carburetor Tune-up Cleaner into the throttle bore for up to one (1) minute.
CAUTION: DO NOT SPRAY FOR LONGER THAN SIX (6) CONTINUOUS SECONDS ON ENGINES THAT HAVE AIR FLOW METERS AND
ARE NOT RUNNING.
10.
Stop actuator and stop engine if running.
11.
Reinstall the air duct.
12.
Start and run the engine for about one (1) minute to dry out the solvent residue.
13.
Operate the actuator to make sure the solvent is purged from the idle by-pass valve.
14.
Disconnect the actuator from the idle air by-pass valve.
15.
Reattach the control signal lead to the air by-pass valve.
16.
Check engine for normal operation.
NOTE:
IT SHOULD NOT BE NECESSARY TO RESET THE IDLE SPEED SINCE ONLY THE IDLE AIR BY-PASS VALVE WAS SERVICED
IN THIS PROCEDURE
Warranty Coverage
Throttle bodies and idle air by-pass valves on all EFI (Port Fuel Injection) engines through the 1992 model year that can be cleaned (as identified in the
application charts) are covered under 5/50 Emissions Warranty Coverage.
