EEC IV - Adaptive Strategy

84ford7

Article No. 84-19-13

SURGE, HESITATION, OR IDLE SPEED HIGH - 2.3L HSC CFI, 2.3L EFI, 2.8L FBC, OR 5.0L EFI - ADAPTIVE STRATEGY


FORD 1985 TEMPO

LINCOLN-MERCURY 1985 TOPAZ

LIGHT TRUCKS 1985 RANGER, BRONCO II, F-SERIES AND BRONCO 1985

Engine electronics (EEC IV) on 1985 models have a new design called "Adaptive Strategy." The purpose of "Adaptive Strategy" is to continually adjust the engine calibration to correct for variation of EEC IV components. A short adjustment or learning period will occur.

1. On new vehicles.

2. When the battery has been disconnected during normal service.

3. When an EEC component is disconnected or replaced.

During the adjustment or learning period (usually under 5 miles of driving) some vehicles could exhibit abnormal drive symptoms (surge, hesitation, high idle speeds). For new vehicles, the learning process will probably be complete by the time the vehicle has been delivered to your dealership. If drive symptoms occur on the subject vehicles at predelivery, after the battery has been disconnected or after EEC component servicing, the EEC IV memory can be adjusted by performing the following routine.

1. Disconnect the vehicle negative battery cable for 5 to 10 minutes.

2. Reconnect the battery cable and bring the engine to normal operating temperature and verify the original concern has been corrected.

NOTE: On all 2.3L HSC CFI vehicles, the following procedure must be performed and may be required on the other subject vehicles if drive symptoms persist.
3. With all accessories off, idle the engine as follows:

a. 2 minutes in Neutral (vehicles with manual transmission only) (AC off if so equipped).

2 minutes in Drive (vehicles with automative transmissions only) AC off if so equipped.

b. 2 minutes in Drive with A/C on (if so equipped).

4. Drive the vehicle for 5 minutes through a Stop and Go normal city drive cycle.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"