Fuel Injector Circuit
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Ford Ranger, 1991 Ford RV Cutaway, 1991 Ford Pickup, 1991 Ford F-Super Duty, and 1991 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect all injector harness connectors. Using digital ohmmeter, check resistance across terminals of each injector. See INDIVIDUAL INJECTOR RESISTANCE . Disconnect injector bank harness connector, and check resistance of injector bank. See INJECTOR BANK RESISTANCE . Repair injector bank or any injector not within specifications.
INDIVIDUAL INJECTOR RESISTANCE (1)
| Engine | Ohms | ||
|---|---|---|---|
| 2.3L & 3.0L | 15-18 | ||
| All Others | 13-16 | ||
|
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INJECTOR BANK RESISTANCE
| Engine | Ohms |
|---|---|
| 2.3L | 7.0-9.5 |
| 2.9L, 3.0L & 4.9L | 5.0-6.5 |
| 5.0L, 5.8L & 7.5L | 3.0-4.0 |
NOTE:
For further component testing and information, see appropriate TESTS W/CODES
article in the ENGINE PERFORMANCE Section.