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 pressure gauge 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 (0.27-0.33) | |
| 3.0L (VIN S) | ||
| Intake | .007-.009 (0.18-0.23) | |
| Exhaust | .013-.015 (0.33-0.38) | |
| 3.9L (VIN A) | ||
| Intake | .007-.009 (0.18-0.23) | |
| Exhaust | .009-.011 (0.23-0.27) | |
VALVE CLEARANCE SPECIFICATION
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|---|
| 2.0L & 2.5L | 7000 Or Less Per Foot |
HIGH TENSION WIRE RESISTANCE
SPARK PLUG TYPE (4-CYLINDER)
| Application | Motorcraft No. |
|---|---|
| 2.0L SPI (VIN P) | AGSF-34EE |
| 2.0L Zetec (VIN 3) | AZFS-32FE |
SPARK PLUG TYPE (4-CYLINDER)
SPARK PLUG TYPE (V6)
| Application | Motorcraft No. | |
|---|---|---|
| 2.5L | AWSF-32F | |
| 3.0L DOHC | ||
| LS | AGSF-32FS | |
| Except LS | AWSF-32F | |
| 3.0L OHV | ||
| Except Flex Fuel (FF) | (1) AWSF-32P/AWSF-32PG, Or (2) AGSF-32PP | |
| Flex Fuel (FF) | (1) AWSF-22PG/AWSF-22P, Or (2) AGSF-22PP | |
| 3.8L | (1) AWSF-42E, Or (2) AWSF-42EE | |
| (1) Original spark plug. (2) Service spark plug. | ||
| (1) | Original spark plug. |
| (2) | Service spark plug. |
SPARK PLUG TYPE (V6)
SPARK PLUG TYPE (V8)
| Application | Motorcraft No. | |
|---|---|---|
| 3.9L DOHC | AGSP-32F | |
| 4.6L | ||
| Except DOHC & CNG | AWSF-32P Or AWSF-32PP | |
| DOHC | AWSF-32E Or AWSF-32EE | |
| CNG | AGSF-22FM1 | |
SPARK PLUG TYPE (V8)
IGNITION TIMING
Note. On all models with Distributorless Ignition System (DIS), 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. |
BASE IGNITION TIMING
FUEL PUMP
| Application | Psi (kPa) |
|---|---|
| Cougar, Continental, Escort, Focus, LS, Mustang (All Engines), Sable & Taurus (Except 3.0L Flex-Fuel) | 35-65 (240-448) |
| Crown Victoria (Except CNG), Grand Marquis & Town Car | 30-45 (207-310) |
| Crown Victoria (CNG) | 80-120 (552-827) |
| Taurus (3.0L Flex-Fuel) | 30-65 (207-448) |
FUEL PRESSURE SPECIFICATIONS
IDLE SPEED & MIXTURE
Note. Idle mixture is not adjustable. If idle mixture is incorrect, see THEORY & OPERATION - EEC-V - CNG & GASOLINE article.
| Application | RPM | ||
|---|---|---|---|
| Continental | 695-760 | ||
| Cougar | |||
| 2.0L | 790-900 | ||
| 2.5L | |||
| A/T | 700-760 | ||
| M/T | 730-815 | ||
| Crown Victoria (Except CNG), Grand Marquis & Town Car | 790-815 | ||
| Crown Victoria (CNG) | 790-825 | ||
| 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 (Except Flex-Fuel) | 660-800 | ||
| 3.0L OHV (Flex-Fuel) | 840-900 | ||
| 3.0L DOHC | 700-730 | ||
| (1) Idle speed is not adjustable. | |||
| (1) | Idle speed is not adjustable. |
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 | |
| 96.6 (WOT) | 4.65 | |
| Counterclockwise | ||
| 0 | 1.00 | |
| 20 | 1.95 | |
| 40 | 2.95 | |
| 60 | 3.93 | |
| 76.8 (WOT) | 4.65 | |
| (1) Throttle position may vary by 6 percent. For testing, see TEST DH in SELF-DIAGNOSTICS - EEC-V - CNG & GASOLINE article. | ||
| (1) | Throttle position may vary by 6 percent. For testing, see TEST DH in SELF-DIAGNOSTICS - EEC-V - CNG & GASOLINE article. |
TP SENSOR OUTPUT