WARNING: This page does not describe the selected car, but rather 20 other vehicles, including the 2003 Mercury Mountaineer, 2003 Lincoln Navigator, 2003 Lincoln Blackwood, 2003 Lincoln Aviator, and 2003 Ford Windstar. However, it is still accessible from the selected car via links, so may be relevant.

2003 MODEL COVERAGE

MODEL

ENGINE

ENGINE ID ⁽¹⁾

FUEL SYSTEM

IGNITION SYSTEM

Aviator

4.6L 4V

SFI

DIS

Blackwood

5.4L 4V

SFI

DIS

Cab & Chassis

5.4L

SFI

DIS

.....

6.8L

SFI

DIS

.....

6.8L

SFI ⁽²⁾

DIS

.....

7.3L

Turbo Diesel

N/A

Cutaway

5.4L

SFI

DIS

.....

5.4L

SFI ⁽³⁾

DIS

.....

6.8L

SFI

DIS

.....

7.3L

Turbo Diesel

N/A

Econoline

4.2L

SFI

DIS

.....

4.6L

SFI

DIS

.....

5.4L

SFI

DIS

.....

5.4L

SFI ⁽³⁾

DIS

.....

6.8L

SFI

DIS

.....

7.3L

Turbo Diesel

N/A

Escape

2.0L

SFI

DIS

.....

3.0L

SFI

DIS

Excursion

5.4L

SFI

DIS

.....

6.8L

SFI

DIS

.....

7.3L

Turbo Diesel

N/A

Expedition

4.6L

SFI

DIS

.....

5.4L

SFI

DIS

Explorer

4.0L SOHC

SFI

DIS

.....

4.0L SOHC

SFI ⁽⁴⁾

DIS

.....

4.6L

SFI

DIS

Explorer Sport & Explorer Sport Trac

4.0L SOHC

SFI

DIS

.....

4.0L SOHC

SFI ⁽⁴⁾

DIS

F150

4.2L

SFI

DIS

.....

4.6L

SFI

DIS

.....

4.6L

SFI

DIS

.....

5.4L (Supercharged)

SFI

DIS

.....

5.4L

SFI

DIS

.....

5.4L

SFI ⁽³⁾

DIS

.....

5.4L

SFI ⁽⁵⁾

DIS

F250-550 Pickup

5.4L

SFI

DIS

.....

6.8L

SFI

DIS

.....

7.3L

Turbo Diesel

N/A

Mountaineer

4.0L

SFI

DIS

.....

4.6L

SFI

DIS

Navigator

5.4L 4V

SFI

DIS

Ranger

2.3L

SFI

DIS

.....

3.0L

SFI

Distributor

.....

3.0L

SFI

Distributor

.....

4.0L SOHC

SFI

DIS

.....

⁽⁶⁾

N/A

RV Cutaway

5.4L

SFI

DIS

.....

6.8L

SFI

DIS

.....

7.3L

Turbo Diesel

N/A

Windstar

3.8L

SFI

DIS

⁽¹⁾	Engine may be identified by 8th character of VIN.

⁽²⁾	Bi-fuel - gasoline and LPG only.

⁽³⁾

CNG only.

⁽⁴⁾	Flex-fuel - gasoline and ethanol.

⁽⁵⁾	Bi-fuel - gasoline and CNG, or gasoline and LPG

⁽⁶⁾	336V-75 HP electric (lead acid).

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Model Coverage: Notes

Use the Manual With the Right Hardware

When to See a Mechanic

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