ENGINE COMPRESSION
Warm engine to normal operating temperature. Check compression at cranking speed with throttle wide open and all spark plugs removed. Ensure crankcase is at correct level and oil is of 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 ).
VALVE CLEARANCE
Note. All models except 2.0L (VIN 3), 3.0L (VIN S) and 3.9L (VIN A) are equipped with hydraulic valve lifters. See VALVE CLEARANCE SPECIFICATION table. Valve adjustment is not required if equipped with hydraulic lifters. If valves are noisy or incorrect clearance is suspected, worn components are indicated. Check collapsed valve lifter clearance. See appropriate article in ENGINES.
| Application | In. (mm) |
|---|
| 2.0L (VIN 3) |
| Intake | .004-.007 (0.11-0.18) |
| Exhaust | .011-.013 (0.27-0.34) |
| 3.0L (VIN S) |
| Intake | .007-.09 (0.18-0.23) |
| Exhaust | .013-.015 (0.33-0.38) |
| 3.9L (VIN A) |
| Intake | .007-.09 (0.18-0.23) |
| Exhaust | .009-.011 (0.23-0.27) |
VALVE CLEARANCE SPECIFICATION
HIGH TENSION WIRE RESISTANCE
| Application (1) | Ohms |
|---|
| 2.0L & 2.5L | No More Than 7000 Per Foot |
| (1) On distributorless systems, high tension wire resistance is 30,000 ohms maximum per wire. |
| (1) | On distributorless systems, high tension wire resistance is 30,000 ohms maximum per wire. |
HIGH TENSION WIRE RESISTANCE
4-CYLINDER SPARK PLUG TYPE
| Application | Motorcraft No. |
|---|
| 2.0L SPI (VIN P) | AGSF-34EE |
| 2.0L Zetec (VIN 3) | AZFS-32FE |
4-CYLINDER SPARK PLUG TYPE
V6 SPARK PLUG TYPE
| Application | Motorcraft No. |
|---|
| 2.5L | AWSF-32F |
| 3.0L |
| DOHC | AWSF-32F Or AGSF-32W |
| OHV Except Flex Fuel (FF) | AWSF-32CC |
| OHV Flex Fuel (FF) | AGSF-12PP |
| 3.8L | AWSF-44EE |
V8 SPARK PLUG TYPE
| Application | Motorcraft No. |
|---|
| 3.9L DOHC | AWSF-32F Or AGSP-32F |
| 4.6L |
| Except DOHC & NGV | AWSF-32P |
| DOHC | AWSF-32E |
| Crown Victoria NGV (1) | AWSF-22FM |
| Crown Victoria NGV (2) | AWSF-22FM1 |
| (1) Before February 1999. (2) Starting February 1999. |
| (2) | Starting February 1999. |
IGNITION TIMING
Note. On all models with distributorless electronic ignition, manufacturer does not recommend checking ignition timing, as faulty readings are common and timing is not adjustable.
| Application | Degrees BTDC |
|---|
| All Models | (1) 8-12 |
| (1) Timing is not adjustable. |
| (1) | Timing is not adjustable. |
FUEL PUMP
Note. 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 SELF-DIAGNOSTICS - EEC-V article.
| Application | RPM |
|---|
| Crown Victoria, Grand Marquis & Town Car (2) | 790-815 |
| Contour & Mystique |
| 2.0L DOHC | 790-900 |
| 2.5L |
| A/T | 700-760 |
| M/T | 760-800 |
| Cougar |
| 2.0L | 790-900 |
| 2.5L | 700-760 |
| Continental | 695-760 |
| Escort |
| 2.0L SOHC |
| A/T | 730-790 |
| M/T | 750-820 |
| 2.0L DOHC | 750-820 |
| Focus |
| 2.0L SOHC |
| A/T | 730-790 |
| M/T | 700-800 |
| 2.0L DOHC |
| A/T | 730-790 |
| M/T | 700-750 |
| LS |
| 3.0L | 737 |
| 3.9L | 750-770 |
| Mustang |
| 3.8L |
| A/T | 700-730 |
| M/T | 700-780 |
| 4.6L |
| SOHC | 660-700 |
| DOHC | 630-750 |
| Sable & Taurus |
| 3.0L OHV | 760-900 |
| 3.0L OHV Flex Fuel | 840-900 |
| 3.0L DOHC | 700-730 |
| (1) Idle speed is not adjustable. (2) Includes Crown Victoria Natural Gas Vehicle (NGV). |
| (1) | Idle speed is not adjustable. |
| (2) | Includes Crown Victoria Natural Gas Vehicle (NGV). |
IDLE RPM SPECIFICATION (1)
THROTTLE POSITION (TP) SENSOR
| Throttle Angle Degrees | (1) Volts |
|---|
| Clockwise |
| 20 | 1.00 |
| 40 | 1.97 |
| 60 | 2.95 |
| 80 | 3.95 |
| 100 | 4.65 |
| Counterclockwise |
| 0 | 1.00 |
| 20 | 1.95 |
| 40 | 2.95 |
| 60 | 3.93 |
| 80 | 4.65 |
| (1) Throttle position may vary by 6 percent. For testing, see TEST DH: THROTTLE POSITION (TP) SENSOR in appropriate SELF-DIAGNOSTICS - EEC-V article. |
| (1) | Throttle position may vary by 6 percent. For testing, see TEST DH: THROTTLE POSITION (TP) SENSOR in appropriate SELF-DIAGNOSTICS - EEC-V article. |
