Page 137 of 240

Fuse/RelayLocation Fuse Amp
Rating Passenger Compartment Fuse Panel
Description
5 30A Power lock switches, Power locks without RKE
6 10A Brake-shift interlock, Speed control (gasoline engine only)
7 10A Multi-function switch, Turn signals
8 30A Radio capacitor(s), Ignition coil, Powertrain Control Module (PCM)
diode, PCM power relay, Auxiliary PCM
(APCM) (Diesel engine only)
9 30A Wiper control module, Windshield wiper motor
10 20A Main light switch, Park lamps, License lamp (external lamps), Multi-function
switch (flash-to-pass)
11 15A Multi-function switch (hazards), Brake lamp switch, Brake lamps
12 15A Back-up lamps, Auxiliary battery relay (gasoline engine only), Trailer tow relay
13 15A Blend door actuator, A/C heater, Function selector switch
14 5A Instrument cluster
15 5A Trailer battery charge relay, Cluster, Daytime Running Lamps (DRL) module
16 30A Power seats
17 5A Power mirrors
18 —Not used
19 —Not used
20 10A Restraints
21 —Not used
2004 Econoline (eco)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
137
Page 140 of 240

The high-current fuses are coded as follows.
Fuse/RelayLocation Fuse Amp
Rating Power Distribution Box
Description
1 — Powertrain Control Module (PCM) diode
2 — Alternative Fuel Control Module (AFCM) diode (Natural gas
vehicle only)
3 10A* Daytime Running Lamps (DRL) module, A/C clutch
4 20A* Natural Gas Vehicle (NGV) tank solenoids (natural gas vehicle
only)
5 15A* Horn relay
6 2A* Brake pressure switch
7 60A** Ignition switch, Fuse panel, Accessory delay
8 40A** Trailer battery charge relay
9 50A** Modified vehicle power
10 30A** Electric brake controller
11 60A** 4-Wheel Anti-lock Brake System (4WABS)
12 60A** I/P fuses 29, 34, 35, 38, 40 and 41
13 20A** Fuel pump relay
14 50A** Auxiliary blower relay
15 30A** Main light switch
16 — Not used
17 50A** Blower motor relay (blower motor)
18 60A** Engine compartment fuses 3, 5, 23 and 26, Instrument panel fuses
26 and 32, Diesel start relay
(Diesel engine only)
19 50A** IDM relay (Diesel engine only)
2004 Econoline (eco)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
140
Page 141 of 240
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
20 60A** Auxiliary battery relay (gasoline
engine only), PDB fuses 8 and 24
(Diesel engine only)
21 30A** PCM power relay, PDB fuse 27
22 60A** I/P fuses 4, 5, 10, 11, 16, 17, 22
and 23
23 10A* Alternator
24 20A* Trailer tow running lamps and
back-up lamp relays
25—Not used
26 20A* Trailer tow turn signals
27 10A* PCM
A—Fuel pump relay
B—Horn relay
C—Trailer back-up lamps relay
D—Trailer running lamps relay
E—Trailer battery charge relay
F—IDM relay (Diesel only)
G—PCM relay
H—Blower motor relay
J—Accessory delay relay
K—Start relay (Diesel only)
* Mini fuses ** Maxi fuses
2004 Econoline(eco)
Owners Guide (post-2002-fmt)
USA English(fus)
Roadside Emergencies
141
Page 173 of 240
OPENING THE HOOD
1. Inside the vehicle, pull the hood
release handle located under the
bottom left corner of the instrument
panel.
2. Go to the front of the vehicle and release the auxiliary latch that is
located in the center top of the grill.
3. Lift the hood and secure it with the prop rod.
HOOD
2004 Econoline(eco)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
173
Page 180 of 240
If the battery has been disconnected or a new battery has been installed,
the clock and radio settings must be reset once the battery is
reconnected.
•Always dispose of automotive
batteries in a responsible manner.
Follow your local authorized
standards for disposal. Call your
local authorized recycling center
to find out more about recycling
automotive batteries.
Disconnecting dual batteries (if equipped)
The primary battery is located under the hood.
The auxiliary battery is located on the passenger side frame rail.
LEAD
RETURN
RECYCLE
2004 Econoline(eco)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
180
Page 181 of 240
Gasoline engines
Disconnect:
1. Disconnect the primary battery
ground cable.
2. Disconnect the auxiliary battery
frame ground.
•Remove the ground bolt.
•Pull the cable away from the
frame and make sure that the
cable does not contact the frame.
Connect:
1. Reconnect the auxiliary battery
frame ground.
2004 Econoline(eco)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
181
Page 217 of 240

MOTORCRAFT PART NUMBERS
Component14.6L V8 engine 5.4L V8 engine 6.8L V10
engine
Air filter element FA-1634 FA-1634 FA-1634
Battery
(standard)BXT-65-750 BXT-65-750 BXT-65-750
Battery
(auxiliary)BH-65DC BH-65DC BH-65DC
Fuel filter FG-872 FG-872 FG-872
Oil filter FL-820-S FL-820-S FL-820-S
PCV valve EV-270 EV-270 EV-270
Spark
plugs-platinum
2AGSF-32PM4AGSF-22W AGSF-22W
1Refer to the7.3 Liter Power Stroke Direct Injection Turbo Diesel
Owner’s Guide Supplementfor Motorcraft diesel engine service part
numbers.
2Refer to Vehicle Emissions Control Information (VECI) decal for spark
plug gap information.
3If a spark plug is removed for inspection, it must be reinstalled in the
same cylinder. Cylinders No. 1, 2 and 3 have a“EGM”suffix. Cylinders
No. 4, 5 and 6 have a“EM”suffix. If a spark plug needs to be replaced,
use only spark plugs with the service part number suffix letterEEMas
shown on the engine decal.
4If a spark plug is removed for inspection, it must be reinstalled in the
same cylinder. Cylinders No. 1, 2, 3 and 4 have a“PG”suffix. Cylinders
No. 5, 6, 7 and 8 have a“P”suffix. If a spark plug needs to be replaced,
use only spark plugs with the service part number suffix letter as shown
on the engine decal.
2004 Econoline(eco)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
217
Page 218 of 240

REFILL CAPACITIES
Fluid Ford Part Name Application Capacity
Brake fluid Motorcraft High
Performance DOT 3
Motor Vehicle Brake
FluidAll Fill to line on
reservoir
Engine
oil-gasoline
engine (includes
filter change)
9
Motorcraft SAE
5W-20 Premium
Synthetic Blend
Motor Oil (US)
Motorcraft SAE
5W-20 Super
Premium Motor Oil
(Canada)All 5.7L (6.0
quarts)
Engine oil-diesel
engine (includes
filter change)Refer to thePower Stroke Direct Injection Turbo Diesel
Owner’s Guide Supplement.
Engine
coolant-gasoline
engine
1
Motorcraft Premium
Gold Engine Coolant
(yellow-colored)4.6L V8 engine 23.7L (25.0
quarts)
1 row–22.6L
(23.8 quarts)
8
4.6L V8 engine
with aux rear heat25.7L (27.2
quarts)
1 row–24.6L
(26.0 quarts)
8
5.4L V8 engine 27.4L (29.0
quarts)
1 row–26.3L
(27.8 quarts)
8
5.4L V8 engine
with aux rear heat29.4L (31.0
quarts)
1 row–28.3L
(29.8 quarts)
8
6.8L V10 engine 29.0L (30.6
quarts)
1 row–27.9L
(29.4 quarts)
8
6.8L V10 engine
with aux rear heat31.0L (32.8
quarts)
1 row–29.9L
(31.6 quarts)
8
2004 Econoline(eco)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
218