LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> External Pages >> Different car >> Section 143 (Engine Controls - Adjustments - 5.0L) >> Adjustments >> Idle Speed & Mixture >> Idle Adjustment With E4OD A/T

Idle Adjustment With E4OD A/T

WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford Econoline, 1995 Ford Club Wagon, and 1995 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect scan tester to Data Link Connector (DLC). Enter KOER self-test. A single-pulse tone indicates entry mode has been successfully entered. Observe scan tester readout.
  2. If a constant tone, solid light, or STO LO is displayed, base idle speed is within range and adjustment is not necessary. Exit self-test.
  3. If a beeping tone, flashing light, or STO LO display flashes at 8 Hz, TP sensor is out of range and adjustment is required. Perform adjustment and repeat test.
  4. If a beeping tone, flashing light, or STO LO display flashes at 4 Hz, base idle speed is too high. Go to step 7).
  5. If a beeping tone, flashing light, or STO LO display flashes at one Hz, base idle speed is too low. Go to next step.
  6. DO NOT clean throttle body. Check throttle plate for presence of throttle plate orifice plug. See Figure . If there is no plug, rotate throttle return screw CLOCKWISE only to adjust idle speed until conditions in step 2) are obtained. If there is a plug from previous service, remove plug and rotate screw in either direction to obtain conditions in step 2). After adjustment, screw MUST be in contact with throttle lever pad.
  7. If idle speed is too high, turn engine off. Using tape, block off orifice in throttle plate. If orifice is already plugged, go to next step. On mass airflow engines, reconnect air cleaner hose. On all models, restart engine and check idle speed. If engine stalls, crack throttle plate open with throttle plate stop screw. If idle speed is still too high, go to next step. If idle speed drops to specification or drops lower than specification, go to step 9).
  8. Perform KOEO self-test. If fault codes are present, repair as necessary. See TESTS W/CODES - EEC-IV (5.0L) article in the ENGINE PERFORMANCE section. If TPS fault code exists, proceed to THROTTLE POSITION (TP) SENSOR  . Ensure adjustment screw is in contact with lever pad. If fault codes do not exist, see appropriate article in the ENGINE PERFORMANCE section:
  9. Turn ignition off. Remove air cleaner hose. Remove tape from throttle plate orifice. Select correct color plug for orifice. Plugs are available in Throttle Plate Plug Kit (FOPE-9F652-AA).
  10. Reconnect air cleaner hose. Start engine. Recheck idle speed. If idle speed is not within specification, turn adjuster screw CLOCKWISE to obtain correct idle speed. After adjustment, screw MUST be in contact with throttle lever pad.
  11. On all models, perform a KOEO self-test to verify TPS fault code does not exist. Move throttle plate to verify it is not stuck in bore and linkage is not keeping throttle from closing. On models with automatic overdrive transmissions, check throttle valve pressure adjustment.
scientia non olet · About LEMON Manuals