Ford F150 Pickup. Instruction - part 1220

Spark Check 

Always perform self-diagnostic QUICK TEST to check for ignition-related fault codes, and repair as necessary. 
See QUICK TEST in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. If no fault 
codes are retrieved, check for proper spark at each cylinder, go to TEST JB, step 17) under SYSTEM TESTS in 
SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. If spark is not present, go to 
TEST A: NO-START in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. 

IGNITION COIL RESISTANCE 

IDLE SPEED & IGNITION TIMING 

IDLE MIXTURE ADJUSTMENT 

Idle mixture is not adjustable. If idle mixture is incorrect, see TEST H: FUEL CONTROL in SELF-
DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. 

IGNITION TIMING 

BASE IGNITION TIMING 

4.6L, and Navigator 5.4L 4V use Coil On Plug (COP). COP faults should set a 
DTC. For additional COP testing, see TEST JF: INTEGRATED IGNITION COIL ON 
PLUG FAILURE in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & 
GASOLINE article.

NOTE:

For circuit identification, see ENGINE PERFORMANCE in appropriate SYSTEM 
WIRING DIAGRAMS article in ELECTRICAL.

NOTE:

Resistance values are not provided by manufacturer. For integrated ignition coil 
testing, see TEST JE: INTEGRATED IGNITION COIL FAILURE in SELF-
DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. For integrated 
ignition Coil On Plug (COP) testing, see TEST JF: INTEGRATED IGNITION COIL 
ON PLUG FAILURE in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & 
GASOLINE article.

NOTE:

Idle speed and ignition timing are not adjustable. If idle speed is incorrect, see 
TEST HU: AIR INTAKE SYSTEM and TEST KE: IDLE AIR CONTROL VALVE in 
SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article.

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

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Basic Diagnostic Procedures - Trucks - Except Diesel

  

THROTTLE POSITION SENSOR ADJUSTMENT 

Throttle Position (TP) sensor is not adjustable. If testing is necessary, see TEST DH: THROTTLE 
POSITION SENSOR in SELF-DIAGNOSTICS - EEC-V - CNG, FLEX-FUEL & GASOLINE article. 

SUMMARY 

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to SELF-
DIAGNOSTICS in appropriate SELF DIAGNOSTICS - EEC-V article. If no trouble codes are found in self-
diagnostics, proceed to appropriate TROUBLE SHOOTING - NO CODES article for diagnosis by symptom 
(i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.

All Models

(1)

 8-12

(1)

Timing is not adjustable.

 

2003 Ford Pickup F150 

2003 ENGINE PERFORMANCE Basic Diagnostic Procedures - Trucks - Except Diesel

  

EMISSION CONTROL APPLICATIONS

Emission Applications - Ford Motor Co. - Domestic Trucks (1966-2003) 

EMISSION APPLICATIONS 

1966-75 FORD MOTOR CO. - DOMESTIC TRUCKS 

Year, Engine & Fuel System

Emission Control Systems & Devices

1966-67

All Engines (Carb.)

PCV, 

(2)

 AIS

1968

170" 6-Cyl. Carb. 

(3)

PCV, ACL, 

(4)

 AIS,

(5)

 IMCO

240" 6-Cyl. Carb. 

(3)

PCV, ACL, 

(4)

 AIS,

(5)

 IMCO

289" V8 Carb. 

(3)

PCV, ACL, 

(4)

 AIS,

(5)

 IMCO

300" 6-Cyl. Carb. 

(3)

PCV, ACL, 

(4)

 AIS,

(5)

 IMCO

360: & 390" V8 Carb. 

(3)

PCV, ACL, 

(2)

 AIS,

(5)

 IMCO

1969

170" 6-Cyl. Carb. 

(3)

PCV, ACL,

IMCO

240" 6-Cyl. Carb. 

(3)

PCV, ACL,

IMCO

300" 6-Cyl. Carb. 

(3)

PCV,

IMCO

302" V8 Carb. 

(3)

PCV, ACL,

IMCO

360" V8 Carb. 

(3)

PCV,

IMCO

390" V8 Carb. 

(3)

PCV,

IMCO

1970-71

All Engines (Carb.) 

(3)

PCV, ACL, 

(6)

 EVAP,

EVAP-VC, IMCO

1972

170", 240" & 300" 6-Cyl. Carb.

PCV, ACL, 

(7)

 EVAP,

EVAP-VC, IMCO

302", 360" & 390" V8 Carb.

 

2003 Ford Pickup F150 

EMISSION CONTROL APPLICATIONS Emission Applications - Ford Motor Co. - Domestic Trucks (1966-2003)

  

 

2003 Ford Pickup F150 

EMISSION CONTROL APPLICATIONS Emission Applications - Ford Motor Co. - Domestic Trucks (1966-2003)

  

PCV, ACL, 

(7)

 EVAP,

1973 Light Duty Emissions (6000 GVWR Or Less)

200" 6-Cyl. Carb. 

(8)

PCV, ACL, EVAP,

EVAP-VC, IMCO

240" 6-Cyl. Carb.

PCV, ACL, EVAP,

EVAP-VC, IMCO

300" 6-Cyl. Carb.

PCV, ACL, EVAP, 

(9)

 EGR,

EVAP-VC, IMCO

302" & 360" V8 Carb.

PCV, ACL, EVAP, 

(9)

 EGR,

EVAP-VC, IMCO

390" & 460" V8 Carb.

PCV, ACL, EVAP, 

(9)

 EGR,

EVAP-VC, IMCO

1973 Heavy Duty Emissions (6001 GVWR Or More) 

(1)

330", 361", 391", 401", 477", & 534" V8 
Carb.

PCV, ACL, 

(2)(10)

 EVAP

1974 Light Duty Emissions (6000 GVWR Or Less)

200" 6-Cyl. Carb.

PCV, ACL, 

(10)

 EVAP

240" 6-Cyl. Carb.

PCV, ACL, 

(10)

 EVAP, 

(2)

 EGR, 

(2)(11)

 SPK

300" 6-Cyl. Carb.

PCV, ACL, 

(10)

 EVAP, 

(2)

 EGR, 

(2)(11)

 SPK

302" V8 Carb.

PCV, ACL, 

(10)

 EVAP, 

(13)

 EGR, 

(2)(11)

 SPK, AIS

360", 390" & 460" V8 Carb.

PCV, ACL, 

(10)

 EVAP, EGR, 

(2)(11)

 SPK, AIS

1974 Heavy Duty Emissions (6001 GVWR Or More) 

(1)

302" V8 Carb.

PCV, ACL, 

(6)(10)

 EVAP, EGR, EFE

330", 361", 401", 477" & 534" V8 Carb.

PCV

360" V8 Carb.

PCV, ACL, 

(10)

 EVAP, 

(2)

 EGR, 

(2)(11)

 SPK

390" V8 Carb.

PCV, ACL, 

(2)(7)(10)

 EVAP, 

(2)

 EGR, 

(2)(11)

 SPK

460" V8 Carb.

PCV, ACL, 

(2)

 EGR, 

(2)(11)

 SPK,

(12)

 CTAVS

1975 Light Duty Emissions (6000 GVWR Or Less)

300" 6-Cyl. Carb.

PCV, ACL, 

(10)

 EVAP, 

(2)(13)

 OC, 

(2)(13)

FR, EGR, 

AIS

302" V8 Carb.

PCV, ACL, EVAP, 

(2)

 OC, 

(2)

 FR, 

(13)

 EGR, AIS, 

EFE,

EVAP-VC, EFE-HCV

(1)

For emission applications on gasoline-powered motor homes 8501 GVWR or more and built on a 
motor home chassis, see FORD MOTOR CO. - CLASS "A" MOTOR HOMES.

(2)

Some models.

(3)

Heavy duty models (6001 GVWR or more) have PCV only.

 

2003 Ford Pickup F150 

EMISSION CONTROL APPLICATIONS Emission Applications - Ford Motor Co. - Domestic Trucks (1966-2003)