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Engine Controls - Service & Adjustment Specifications Mercury Grand Marquis III

Specifications 11 illustrations ~514 words

INTRODUCTION

Note. Information for Escort also applies to ZX2, unless otherwise indicated.

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.

BATTERY SPECIFICATIONS

ApplicationCranking Amps
Continental & Town Car850
Contour & Mystique
2.0L540
2.5L650
Cougar540
Crown Victoria & Grand Marquis650
Escort & Tracer(1)
Mustang540
Sable & Taurus540
(1) Information is not available from manufacturer.
(1)Information is not available from manufacturer.

BATTERY SPECIFICATIONS

COOLING SYSTEM CAPACITIES

ApplicationQts. (L)
Continental15.8 (15.0)
Contour & Mystique
2.0L7.0-7.5 (6.6-7.1)
2.5L10.0-10.2 (9.5-9.7)
Cougar
2.0L7.0 (6.6)
2.5L10.0 (9.5)
Crown Victoria15.8 (15.0)
Escort & Tracer
A/T5.3 (5.0)
M/T6.3 (6.0)
Grand Marquis & Town Car14.1 (13.3)
Mustang
3.8L11.8 (11.2)
4.6L14.1 (13.3)
Sable & Taurus
3.0L (OHC) & 3.4L (SHO)10.6 (10.0)
3.0L (OHV)11.6 (11.0)

COOLING SYSTEM CAPACITIES

ENGINE OIL CAPACITIES

ApplicationQts. (L)
2.0L (DOHC)4.5 (4.3)
2.0L (SOHC)4.0 (3.8)
2.5L5.8 (5.1)
3.0L (OHC)5.5 (5.2)
3.0L (OHV)4.5 (4.3)
3.4L (SHO)6.5 (6.1)
3.8L4.0 (3.8)
4.6L
Mustang5.0 (4.7)
All Others6.0 (5.7)
(1) Includes oil filter change.
(1)Includes oil filter change.

CRANKCASE CAPACITIES (1)

TRANSMISSION FLUID CAPACITIES

ApplicationQts. (L)
Continental (1)13.7 (13.0)
Contour & Mystique (2)
A/T
2.0L9.0 (8.5)
2.5L10.2 (9.6)
M/T2.7 (2.6)
Cougar
A/T
2.0L9.0 (8.5)
2.5L10.2 (9.6)
M/T2.7 (2.6)
Crown Victoria, Grand Marquis & Town Car (1)13.9 (13.1)
Escort & Tracer (2)
A/T4.1 (3.9)
M/T3.5 (3.3)
Mustang (1)
A/T
With 3.8L Engine13.9 (13.1)
With 4.6L Engine12.8 (12.0)
M/T
T453.3 (3.1)
T50D2.7 (2.6)
Sable & Taurus (1)
AX4N Transmission13.5 (12.8)
AX4S Transmission12.2 (12.2)
(1) Use Mercon V (synthetic) automatic transmission fluid only. (2) Use Mercon automatic transmission fluid.
(1)Use Mercon V (synthetic) automatic transmission fluid only.
(2)Use Mercon automatic transmission fluid.

TRANSMISSION CAPACITIES

DIFFERENTIAL FLUID CAPACITIES

ApplicationPts. (L)
Crown Victoria, Grand Marquis & Town Car (2)3.75 (1.7)
Mustang (2)
With 7.5" Ring Gear3.25 (1.5)
With 8.8" Ring Gear3.75 (1.7)
(1) 80W-90 gear lube. (2) Add 4 oz. (12 cc) friction modifier for Traction-Lok axles.
(1)80W-90 gear lube.
(2)Add 4 oz. (12 cc) friction modifier for Traction-Lok axles.

AXLE CAPACITIES (1)

SERVICE INTERVALS & SPECIFICATIONS

ComponentInterval (Miles) (Regular Schedule)Interval (Miles) (Severe Duty)
Air Filter30,00030,000
Cabin Air Filter15,0009000
Coolant(1) 50,00048,000
Fuel Filter(2)(2)
Oil & Filter50003000
PCV Valve(3) 60,00060,000
Spark Plugs(4) 100,000100,000
Automatic Transmission
Continental & Mustang30,00021,000
Contour & Mystique30,00030,000
Escort & Tracer(2)(2)
Sable & Taurus60,00042,000
All Others30,00030,000
Manual Transmission(2)(2)
(1) Change engine coolant initially at 50,000 miles and every 30,000 miles thereafter. (2) Information is not available from manufacturer. (3) On Escort and Tracer, and models with 4.6L engine, replace PCV valve at 60,000 miles. (4) On flexible fuel engines, replace spark plugs every 30,000 miles. On Natural Gas (NG) vehicles, replace spark plugs every 60,000 miles.
(1)Change engine coolant initially at 50,000 miles and every 30,000 miles thereafter.
(2)Information is not available from manufacturer.
(3)On Escort and Tracer, and models with 4.6L engine, replace PCV valve at 60,000 miles.
(4)On flexible fuel engines, replace spark plugs every 30,000 miles. On Natural Gas (NG) vehicles, replace spark plugs every 60,000 miles.

REPLACEMENT INTERVALS

BELT ADJUSTMENT

All models use automatic tensioner, accessory belt adjustment is not required. Replace belt when automatic tensioner wear indicator mark reaches maximum position.

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 ).

4-CYLINDER COMPRESSION RATIO SPECIFICATIONS

ApplicationCompression Ratio
2.0L (DOHC)9.6:1
2.0L (SOHC)9.2:1

4-CYLINDER COMPRESSION RATIO SPECIFICATIONS

V6 COMPRESSION RATIO SPECIFICATIONS

ApplicationCompression Ratio
2.5L9.7:1
3.0L (DOHC)10.0:1
3.0L (OHV & SOHC)9.3:1
3.8L9.0:1

V6 COMPRESSION RATIO SPECIFICATIONS

V8 COMPRESSION RATIO SPECIFICATIONS

ApplicationCompression Ratio
3.4L (SHO)10.0:1
4.6L
Continental & Mustang DOHC9.8:1
Town Car
California Emissions9.0:1
Federal Emissions10.0:1
All Others9.0:1

V8 COMPRESSION RATIO SPECIFICATIONS

VALVE CLEARANCE

Note. All models except 2.0L (VIN 3) and 3.4L (VIN N) 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.

ApplicationIn. (mm)
2.0L
Intake.004-.007 (0.11-0.18)
Exhaust.010-.013 (0.25-0.34)
3.4L
Intake.006-.010 (0.15-0.25)
Exhaust.010-.014 (0.25-0.35)

VALVE CLEARANCE SPECIFICATION

HIGH TENSION WIRE RESISTANCE

Application (1)Ohms
2.0L & 2.5L4000-7000 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

ApplicationMotorcraft No.
2.0L (VIN P)AGSF-34EE
2.0L (VIN 3)AZFS-22PP Or AZFS-22F

4-CYLINDER SPARK PLUG TYPE

V6 SPARK PLUG TYPE

ApplicationMotorcraft No.
2.5L (VIN B)AGSP-33C
2.5LAWSF-32F
3.0L
DOHCAWSF-32F
Flex Fuel (FF)AWSFA-32C
Except DOHC & Flex FuelAWSF-32PP
3.8LAWSF-44PP

V6 SPARK PLUG TYPE

V8 SPARK PLUG TYPE

ApplicationMotorcraft No.
3.4L (SHO)AWSF-32FM
4.6L
Continental & Mustang DOHCAWSF-32EE
All OthersAWSF-32PP

V8 SPARK PLUG TYPE

4-CYLINDER SPARK PLUG SPECIFICATIONS

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
2.0L (VIN P).052-.056 (1.30-1.40)7-15 (10-20)
2.0L (VIN 3).048-.052 (1.20-1.32)9-13 (13-17)

4-CYLINDER SPARK PLUG SPECIFICATIONS

V6 SPARK PLUG SPECIFICATIONS

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
2.5L (VIN L).052-.056 (1.32-1.42)7-15 (9-20)
3.0L
DOHC.052-.056 (1.32-1.42)7-15 (9-20)
Except DOHC.042-.046 (1.07-1.17)7-15 (9-20)
3.8L.052-.056 (1.32-1.42)11 (15)

V6 SPARK PLUG SPECIFICATIONS

V8 SPARK PLUG SPECIFICATIONS

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
3.4L SHO.042-.046 (1.07-1.17)7-15 (9-20)
4.6L.054 (1.37)7-15 (9-20)

V8 SPARK PLUG SPECIFICATIONS

FIRING ORDER & TIMING MARKS

Note. Illustration for 3.4L SHO timing marks is not available from manufacturer.

Identifying Firing Order & Timing Marks (2.0L). Scheme 1

Scheme 1: Identifying Firing Order & Timing Marks (2.0L)
Scheme 1: Identifying Firing Order & Timing Marks (2.0L)

Scheme 2

Scheme 2: Spark Plug Wire Routing (2.0L)
Scheme 2: Spark Plug Wire Routing (2.0L)

Identifying Firing Order & Timing Marks (2.5L & 3.0L - VIN "S"). Scheme 3

Scheme 3: Identifying Firing Order & Timing Marks (2.5L & 3.0L - VIN "S")
Scheme 3: Identifying Firing Order & Timing Marks (2.5L & 3.0L - VIN "S")

Scheme 4

Scheme 4: Spark Plug Wire Routing (2.5L)
Scheme 4: Spark Plug Wire Routing (2.5L)

Scheme 5

Scheme 5: Spark Plug Wire Routing (3.0L - VIN "S")
Scheme 5: Spark Plug Wire Routing (3.0L - VIN "S")

Identifying Firing Order & Timing Mark ID (3.0L - VIN "U"). Scheme 6

Scheme 6: Identifying Firing Order & Timing Mark ID (3.0L - VIN "U")
Scheme 6: Identifying Firing Order & Timing Mark ID (3.0L - VIN "U")

Scheme 7

Scheme 7: Spark Plug Wiring Routing (3.0L - VIN "U")
Scheme 7: Spark Plug Wiring Routing (3.0L - VIN "U")

Identifying Firing Order & Timing Marks (3.8L). Scheme 8

Scheme 8: Identifying Firing Order & Timing Marks (3.8L)
Scheme 8: Identifying Firing Order & Timing Marks (3.8L)

Scheme 9

Scheme 9: Spark Plug Wire Routing (3.8L)
Scheme 9: Spark Plug Wire Routing (3.8L)

Identifying Firing Order (3.4L SHO). Scheme 10

Scheme 10: Identifying Firing Order (3.4L SHO)
Scheme 10: Identifying Firing Order (3.4L SHO)

Identifying Firing Order & Timing Marks (4.6L). Scheme 11

Scheme 11: Identifying Firing Order & Timing Marks (4.6L)
Scheme 11: Identifying Firing Order & Timing Marks (4.6L)

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.

ApplicationDegrees BTDC
All Models(1) 8-12
(1) Timing is not adjustable.
(1)Timing is not adjustable.

BASE IGNITION TIMING

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 SELF - DIAGNOSTICS - EEC-V article.

ApplicationRPM
Continental, Crown Victoria, Grand Marquis & Town Car775-825
Contour & Mystique
2.0L
A/T775-825
M/T855-905
2.5L
A/T720-770
M/T700-750
Cougar
2.0L
A/T750-850
M/T830-930
2.5L675-775
Escort & Tracer
A/T755-805
M/T700-750
Mustang
3.8L
A/T675-725
M/T700-750
4.6L630-680
Sable & Taurus875-925
(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
201.00
402.00
603.00
803.80
1004.50
Counterclockwise
01.00
202.00
403.00
603.80
804.65
(1) Throttle position may vary by 6 percent. For testing, refer to TEST DH in SELF - DIAGNOSTICS - EEC-V article.
(1)Throttle position may vary by 6 percent. For testing, refer to TEST DH in SELF - DIAGNOSTICS - EEC-V article.

TP SENSOR OUTPUT

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