Aerostar 2WD V6-245 4.0L (1990)
serviced.
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Do not clean throttle bodies identified to accept service kit (F2PZ-9F939-A), IDLE AIR ADJUST SPACER.
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Use a 1" (25.4 mm) to 1-1/2" (38.1 mm) wire stemmed horse hair or nylon bottle cleaner type brush.
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Use rubber gloves and eye protection.
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Do not clean throttle bodies identified with a yellow/black "ATTENTION" label.
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Do not clean "Black" plastic air by-pass valves. Refer to TSB 89-13-8 for service details.
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Do not run vehicles with air flow meters when the air duct is removed.
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Do not use carburetor cleaner as a cleaning solvent. Use Carburetor Tune-up Cleaner (D9AZ-19579-AA).
Procedure # 1
THROTTLE BODY AND IDLE AIR BY-PASS VALVE CLEANING
CAUTION: DO NOT RUN VEHICLES EQUIPPED WITH AIR FLOW METERS DURING THE CLEANING PROCEDURE. IF THERE IS A
YELLOW/BLACK "ATTENTION" LABEL ON THE THROTTLE BODY ADVISING NOT TO CLEAN, OR IF THE VEHICLE IS
IDENTIFIED AS ACCEPTING SERVICE KIT (F2PZ-9F939-A), USE PROCEDURE # 2 FOR IDLE AIR BY-PASS VALVE
CLEANING ONLY.
1.
Plug the actuator into the connector in the Rotunda Cleaner/Tester, Tool 113-00009.
2.
Remove the air duct to the throttle body inlet.
3.
Disoonnect 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. Do not start engines that have air flow meters.
6.
Spray just enough Carburetor Tune-up Cleaner (D9AZ-19579-AA) into the throttle bore to wet the bore and throttle plate.
7.
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.
8.
Stop the engine and actuator. Let everything soak for fifteen (15) minutes.
9.
After a fifteen (15) minute soak, saturate the cleaning brush with solvent and scrub between the throttle body bore and plate while holding the
throttle wide open.
NOTE:
IT IS NECESSARY TO APPLY SOME PRESSURE ON THE BRUSH WHILE SCRUBBING.
10.
Repeat saturating the brush and scrubbing for one (1) to two (2) minutes, making sure to reach into the corners where the throttle shaft meets the
bore wall.
11.
Start the actuator and the start the engine. Do not start engines that have air flow meters.
12.
Spray Carburetor Tune-up Cleaner into the throttle bore for up to one (1) minute to wash away residue. Do not spray for longer than six (6)
continuous seconds on engines that have air flow meters and are not running.
13.
Spray Carburetor Tune-up Cleaner into the idle by-pass valve passage leading to the inlet of the valve for up to one (1) minute. Do not spray for
longer than six (6) continuous seconds on engines that have air flow meters and are not running.
14.
Stop actuator and stop engine, if running.
NOTE:
MAKE SURE THE THROTTLE PLATES OPERATE FREELY AND CLOSE PROPERLY.
15.
Reinstall the air duct.
16.
Start and run the engine for about one (1) minute to dry out the solvent residue.
