Engine - Rough Idling
Article No. ^ WIRING - LOOSE FUEL INJECTOR ELECTRICAL
87-13-6 TERMINALS - VEHICLES EQUIPPED WITH EFI
^ IDLE - ROUGH - LOOSE FUEL INJECTOR ELECTRICAL
TERMINALS - VEHICLES EQUIPPED WITH EFI
FORD: 1987 ESCORT, EXP, MUSTANG, THUNDERBIRD, TAURUS, CROWN VICTORIA
LINCOLN-MERCURY: 1987 LYNX, COUGAR, SABLE, GRAND MARQUIS, MARK VII, CONTINENTAL, LINCOLN TOWN CAR
LIGHT TRUCK: 1987 RANGER, BRONCO II, F SERIES, BRONCO, ECONOLINE, AEROSTAR
ISSUE: A rough idle on vehicles equipped with Electronic Fuel Injection (EFI) may be caused by loose electrical terminals in the fuel injector hardshell connectors.
ACTION: To correct this, use the following diagnostic service procedure.
1. Check each connector for loose electrical terminals.
2. If you find that the electrical terminals are loose, remove each connector from the fuel injector and push the electrical terminals into the hardshell connector until they are fully seated.
3. Reinstall the connector.
4. Pull on the wire with approximately ten (10) lbs. of force. If wire and electrical terminal pull out of the connector, a new fuel injector wire harness assembly needs to be installed.
Use the appropriate 1987 Car or Light Truck Shop Manual for the fuel injector wire harness service installation procedure.
NOTE: Refer to the following fuel injector wire harness application chart for the correct part application.
FUEL INJECTOR WIRE HARNESS APPLICATION CHART
Vehicle Line Engine Part Number
Thunderbird/Cougar 5.0L E6SZ-9D930-A
Thunderbird 2.3L Turbo E7SZ-9D930-A
Crown Victoria/
Grand Marquis 5.0L E7AZ-9D930-A
Lincoln Town Car
Mustang 2.3L E7ZZ-9D930-C
Mustang 5.0L E6SZ-9D930-A
Escort/Lynx 1.9L E7FZ-9D930-B
Taurus/Sable 3.0L E7DZ-9D930-A
Mark VII, Continental 5.0L E6LY-9D930-A
F Series, Bronco 4.9L E7TZ-9D930-B
F Series, Bronco 5.0L E7TZ-9D930-A
F Series 7.5L E7TZ-9D930-C
Ranger, Bronco II 2.3L E5TZ-9D930-B
Ranger, Bronco II 2.9L E6TZ-9A451-A
Econoline 5.0L E7UZ-9D930-A
Econoline 7.5L E7UZ-9D930-B
Aerostar 2.3L E5TZ-9D930-B
Aerostar 3.0L E7DZ-9D930-A
PART NUMBER PART NAME CLASS
E6SZ-9D930-A Fuel Injector Wire C
Harness
E7SZ-9D930-A Fuel Injector Wire C
Harness
E7AZ-9D930-A Fuel Injector Wire C
Harness
E7ZZ-9D930-C Fuel Injector Wire C
Harness
E7FZ-9D930-B Fuel Injector Wire C
Harness
E7DZ-9D930-A Fuel Injector Wire C
Harness
E6LY-9D930-A Fuel Injector Wire C
Harness
E7TZ-9D930-A Fuel Injector Wire C
Harness
E7TZ-9D930-B Fuel Injector Wire C
Harness
E7TZ-9D930-C Fuel Injector Wire C
Harness
E5TZ-9D930-B Fuel Injector Wire C
Harness
E6TZ-9A451 -A Fuel Injector Wire C
Harness
E7UZ-9D930-A Fuel Injector Wire C
Harness
E7UZ-9D930-B Fuel Injector Wire C
Harness
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual
OPERATION: SP871306A - Time to check fuel injector connector terminals for not being fully seated.
TIME: 0.3 Hr. - May be used in conjunction with operations listed below.
OPERATION: SP871306B - Time to replace fuel injector wiring harness assembly.
TIME: 1.3 Hrs. - Mustang, Thunderbird/Cougar, Mark VII, Continental - 5.0L EFI
1.0 Hr. - Taurus/Sable - 3.0L EFI
1.2 Hrs. - Ford/Mercury, Lincoln Town Car, F Series, Bronco, Ranger, Bronco II, Aerostar - 2.9L EFI, 3.0L EFI and 5.0L EFI
0.3 Hr. - Escort/Lynx, EXP, Mustang, Thunderbird, Aerostar, Ranger - 1.9L EFI, 2.3L EFI and 2.3L EFI Turbo
1.7 Hrs. - Econoline - 4.9L EFI and 5.0L EFI
1.6 Hrs. - F Series, Bronco - 4.9L EFI
DLR. CODING: Basic Part No. 9D930 - Code: 44