INTRODUCTION
Use this article to quickly find specifications related to servicing and on-vehicle adjustments. This is a quick-reference article to use when you are familiar with an adjustment procedure and only need a specification.
CAPACITIES
| Application | Cranking Amps |
|---|
| Mark VIII | 850 |
| Cougar |
| 3.8L | 540 |
| 5.0L | 650 |
| Crown Victoria & Grand Marquis | 540 |
| Mustang | 540 |
| Thunderbird |
| 3.8L Except SC | 480 |
| 3.8L SC |
| A/T | 540 |
| M/T | 650 |
| 5.0L | 650 |
| Town Car | 650 |
| Application | Quantity |
|---|
| Crankcase (Includes Filter) |
| Mark VIII | 6.0 Qts. (5.7L) |
| Except Mark VIII | 5.0 Qts. (4.7L) |
| Cooling System (Includes Heater) | 14.1 Qts. (13.3L) |
| Man. Transmission (Type F, Dexron-II Or Mercon ATF) |
| Cougar & Thunderbird | 3.2 Qts. (3.0L) |
| Mustang | 2.8 Qts. (2.6L) |
| Auto. Transmission (Dexron-II Or Mercon) |
| Cougar, Mark VIII, Mustang & Thunderbird | 12.3 Qts. (11.6L) |
| Crown Victoria, Grand Marquis & Town Car | 13.6 Qts. (12.9L) |
| Differential (SAE 80W-90/API GL-5) |
| Cougar, Mark VIII & Thunderbird | 3.2 Qts. (3.0L) |
| Crown Victoria, Grand Marquis & Town Car | (1) 3.7 Qts. (3.5L) |
| Mustang | (1) 3.7 Qts. (3.5L) |
| (1) For Traction-Lok differential, add 2 ozs. of friction modifier. |
| (1) | For Traction-Lok differential, add 2 ozs. of friction modifier. |
SERVICE INTERVALS & SPECIFICATIONS
| Component | Interval (Miles) |
|---|
| Air Filter | 30,000 |
| Coolant | 30,000 |
| Oil & Filter | 7500 |
| PCV Valve | 30,000 |
| Spark Plugs | 30,000 |
| Timing Belt | 60,000 |
| (1) Mileage intervals are for vehicles driven under normal driving conditions. |
| (1) | Mileage intervals are for vehicles driven under normal driving conditions. |
REPLACEMENT INTERVALS (1)
| Application | New Belt | Used Belt |
|---|
| 4.6L (2) | 110-120 (48-53) | 100-120 (45-53) |
| 5.0L | 100-130 (45-57) | 90-120 (40-53) |
| (1) Tension in Lbs. (kg) using Belt Tension Gauge. (2) Specification is for reference only; belt is not adjustable. |
| (1) | Tension in Lbs. (kg) using Belt Tension Gauge. |
| (2) | Specification is for reference only; belt is not adjustable. |
DRIVE BELT ADJUSTMENT (1)
ENGINE COMPRESSION
Warm engine to normal operating temperature. Check compression at cranking speed with throttle wide open and all spark plugs removed. On engines with dual plug cylinders, remove exhaust side only. Ensure crankcase is at correct level and oil is correct viscosity. With compression gauge installed, use remote starter to crank engine.
Crank engine 5 revolutions (minimum) and record highest reading. Repeat procedure for all cylinders using approximately same number of revolutions. Lowest compression reading should not be less than 75 percent of highest compression reading. Cylinder compression readings should not be less than 100 psi (7 kg/cm 2 ).
| Application | Compression Ratio |
|---|
| 4.6L | 9.0:1 |
| 5.0L | 9.0:1 |
COMPRESSION RATIO SPECIFICATIONS
VALVE CLEARANCE
Note. Hydraulic valve lifters are used and valve adjustment is not required. If incorrect valve clearance is suspected, lifter must be collapsed before clearance can be checked.
| Application | In. (mm) |
|---|
| 4.6L |
| Mark VIII | .031-.047 (.80-1.20) |
| Except Mark VIII | .017-.033 (.45-.85) |
| 5.0L |
| Allowable | .098-.198 (2.49-5.03) |
| Preferred | .123-.146 (3.12-3.71) |
COLLAPSED VALVE LIFTER CLEARANCE
IGNITION COIL
| Application | Primary (Ohms) | Secondary (Ohms) |
|---|
| Distributorless Systems | (1) | (1) |
| Distributor Systems | 0.8-1.6 | 8000-11,500 |
| (1) Resistance values not provided by manufacturer. For testing, see IGNITION SYSTEMS in the I - EEC-IV SYS/COMP TESTS article. |
| (1) | Resistance values not provided by manufacturer. For testing, see IGNITION SYSTEMS in the I - EEC-IV SYS/COMP TESTS article. |
HIGH TENSION WIRE RESISTANCE
| Application (1) | Ohms |
|---|
| 5.0L | 7000 Per Foot |
| (1) Distributorless systems are 30,000 ohms total per wire. |
| (1) | Distributorless systems are 30,000 ohms total per wire. |
HIGH TENSION WIRE RESISTANCE
SPARK PLUGS
| Application | Motorcraft No. |
|---|
| 4.6L | AGSF-32C |
| 5.0L | ASF-42C |
| Application | Gap In. (mm) | Torque Ft. Lbs. (N.m) |
|---|
| 4.6L | .054 (1.37) | (1) |
| 5.0L | .054 (1.37) | 15 (20) |
| (1) Tighten spark plugs to 84 INCH lbs. (9 N.m). |
| (1) | Tighten spark plugs to 84 INCH lbs. (9 N.m). |
SPARK PLUG SPECIFICATIONS
Scheme 1
Scheme 1: Firing Order & Timing Marks (4.6L)
Scheme 2
Scheme 2: Identifying Spark Plug Wire Routing (Crown Victoria, Grand Marquis & Town Car)
Scheme 3
Scheme 3: Identifying Spark Plug Wire Routing (Mark VIII)
Firing Order & Timing Marks (5.0L). Scheme 4
Scheme 4: Firing Order & Timing Marks (5.0L)
IGNITION TIMING
| Application | Degrees BTDC @ RPM |
|---|
| 4.6L (1) & 5.0L | 10 @ Idle |
| (1) On 4.6L, ignition timing is not adjustable. |
| (1) | On 4.6L, ignition timing is not adjustable. |
DISTRIBUTOR SPECIFICATIONS
Note. All models use computed timing advance; adjustment is not possible.
FUEL PUMP
Note. Fuel pump performance is a measurement of fuel pressure and volume availability, not regulated fuel pressure.
| Application | Specification |
|---|
| Pressure | (1) |
| Volume | 1.5 Pts. (0.7L) In 30 Seconds |
| (1) For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. |
IDLE SPEED & MIXTURE
Note. Idle mixture is not adjustable. If idle mixture is incorrect, see appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section.
| Model | RPM |
|---|
| 4.6L | 640 |
| 5.0L | (1) 625 |
| (1) For M/T vehicles, idle speed is 675 RPM. |
| (1) | For M/T vehicles, idle speed is 675 RPM. |
IDLE SPEED SPECIFICATIONS
THROTTLE POSITION (TP) SENSOR/SWITCH
| Throttle Angle | (1) Volts |
|---|
| 0° | .50 |
| 10° | .97 |
| 20° | 1.44 |
| 30° | 1.90 |
| 40° | 2.37 |
| 50° | 2.84 |
| 60° | 3.31 |
| 70° | 3.78 |
| 80° | 4.24 |
| (1) Values may vary by 15 percent. |
| (1) | Values may vary by 15 percent. |
