Edelbrock 17931 Automobile Parts User Manual

190 Liter/Hr, In Tank Fuel Pump
For 1985-1997 Ford Mustang (Except for 1996-1997 Cobra)
Catalog # 17931
• PLEASE study these instructions carefully before installing your new In-Tank Fuel Pump for 1985-1997 Ford Mustang
(Except 1996-1997 Cobra). If you have any questions or problems, do not hesitate to contact our Technical Hotline at:
1-800-416-8628, from 7am-5pm PST, Mon-Fri, or via e-mail at: Edelbrock@Edelbrock.com. Please fill out and mail
your warranty card.
• Note: Proper installation is the responsibility of the customer. Improper or incomplete installation could result in poor
performance, related component damage, potential severe engine damage, vehicle fire, and will void your warranty. If you
do not feel comfortable installing these parts, we recommend having the installation performed by a professional mechanic.
• Description: This in-tank fuel pump replaces the factory pump and has an increased flow of 190 liters/hour (50 gph).
This in-tank upgrade pump is ideal for supporting performance improvements such as a big-bore throttle body, high
performance intake manifold, camshaft, supercharger, direct port nitrous system, etc. They replace your original pump
exactly and include all necessary hardware for an easy installation:
Kit Contents:
Minimum Tools Required:
Fuel Pump
Fuel Pump Filter
Fuel Pump Isolator
Fuel Tank to Pump Bracket O-Ring
Electrical Connector
Section of Pre-Formed Fuel Hose
Hose Clamp
Fuel Line Retaining Clip (1/4”)
Fuel Line Retaining Clip (5/16”)
Lift or appropriate jack
OSHA-approved jackstands
OSHA-approved fuel transfer pump
OSHA-approved fuel storage containers
Wire stripping and crimping tool
Various hand tools
• Remember: When working on your vehicle, especially when oil or fuel is present, always work in a well ventilated area. Keep all sparks, open flames, or other sources of ignition away from the work area. Failure
to do so could result in a fire or explosion causing vehicle or property damage, personal injury, and/or death.
• Before Beginning: This installation can be accomplished using common tools and procedures. However, you should have
a basic knowledge of automotive repair and modification and be familiar with and comfortable with working on your vehicle.
If you do not feel comfortable working on your vehicle, it is recommended to have the installation completed by a
professional mechanic. Using a factory service manual for your vehicle for reference is helpful.
• Note: Steps shown in these instructions are intended as a general guideline only. If you are not an experienced mechanic,
you should have a copy of your service manual on hand. The installation procedure for replacing your factory fuel pump is
covered in full detail in your factory service manual.
©2003 Edelbrock Corporation
Rev. 11/03
Page 1 of 4
Catalog #17931
Brochure #63-0221
(Note: This rotary fuel injection pump will not work
on carbureted fuel systems. It is for electronic fuel
injection only.)
(Note: The word “bracket” used throughout these
instructions refers to the fuel pump mounting
bracket and fuel level sender assembly.)
1. Make sure the engine is cool and the vehicle is on level
ground. Set the parking brake.
2. Remove the negative (ground) cable from the battery
and position it so that it cannot make a connection to
the battery during the fuel pump installation
3. Relieve fuel system pressure by using a pressure
gauge tool, Ford Service tool # T80L-9974-B or
equivalent. Connect the pressure gauge to the
Schrader valve located on the engine fuel rail. Slowly
open the pressure gauge valve and drain the fuel into
a suitable container to relieve the fuel system
pressure. (This procedure is necessary since the fuel
system can retain gasoline under pressure for a
considerable period of time. Opening a pressurized
line could spray fuel, creating a risk of fire or personal
4. Drain the fuel tank. Use an OSHA-approved gasoline
transfer pump, and remove as much fuel as possible
through the fuel tank filler neck. Store the fuel in
approved safety containers only.
5. Lift and safely support the vehicle with approved
safety stands with enough height to gain clearance to
remove the fuel tank. If lifting only the rear of the
vehicle, remember to block the front wheels.
6. Once the vehicle is lifted and supported, an alternate
method of fuel removal may be implemented.
Determine which line is the fuel return line going back
to the fuel tank (See Fig. 1). Trace the return line
back from the injectors and remove it from the
bracket. Securely attach a hose to the exposed fuel
return tube leading into the tank, and draw the
remaining fuel out and into an approved container.
(Note: Regardless of the method used to remove
fuel from the tank, it is important to remove as much
fuel as possible before removing the tank. This is
required to help prevent fuel spillage, and injury
from excessive weight while removing the tank).
©2003 Edelbrock Corporation
Rev. 11/03
Fuel Pressure Regulator
Fuel Tank
Fuel Filter
Vapor Canister
Fuel Return Line
Typical Fuel System
Fig. 1
(Caution: The fuel tank can be quite awkward to
remove due to its size and weight. Obtain help during
its removal).
(Note: The following instructions may not be specific
to your particular vehicle. See your factory service
manual for specific instructions).
1. Prior to removing the retaining clips in the fuel line
connectors, note their styles and respective fuel line
location. The 1/4” fuel line connector uses a duckbill
style retainer, and the 5/16” fuel line connector uses a
hairpin style clip. The specific service manual for this
vehicle has a section on fuel lines, fuel line connectors,
and fuel line connector retainers that may be referred to,
if necessary, for help in removing the clips and/or fuel
lines. Remove the retaining clips from the fuel line
connectors and remove the fuel lines from the pump
bracket. Check for and remove any other hoses that may
be attached to the fuel tank.
2. Disconnect the electrical connector at the fuel tank to
main harness connector. Support and partially lower the
tank, if needed.
3. Remove the fuel filler neck, if necessary.
4. Support the fuel tank and remove the retaining straps to
allow the tank to be removed from the vehicle. Remove
the fuel tank being careful not to spill any remaining fuel.
5. Note the condition and position of all fuel tank mounting
pads and insulators used to isolate the fuel tank from the
vehicle body. Mislocated, deteriorated, or incorrect pads
and/or insulators can cause objectionable transmission of
fuel pump noise into the vehicle.
Page 2 of 4
Catalog #17931
Brochure #63-0221
1. Thoroughly clean all dirt and debris from the top of the
tank. Clean out any dirt from around the locking ring
and retainer. This must be done to prevent dirt of
foreign material from falling into the fuel tank while
removing the bracket.
2. Lubricate the locking ring with penetrating oil to assist
in its removal. Remove the locking ring by rotating in a
counterclockwise direction.
This can best be
accomplished safely by using the proper service tool as
specified in the factory service manual. Using the
proper tool is ideal. However, the locking ring can be
removed by other methods. Whichever method you
use, do not use any method that could potentially cause
sparks resulting in fire or explosion.
3. Once the locking ring is removed, carefully remove the
bracket from the fuel tank. Be careful not to bend the
float arm or scratch the float when it is removed.
Discard the old fuel tank to bracket o-ring seal.
(Note: See Fig. 2 for reference during all steps.)
Fuel Pump
Power Leads
Fuel Pump
Fuel Pump
Hose Clamp
Fuel Hose
Fuel Filter
Hose Clamp
Lower to Upper
Bracket Screws
Fig. 2
©2003 Edelbrock Corporation
Rev. 11/03
1. Note the position of the fuel pickup filter in relation to the
bracket before removing the filter. Remove and discard
the filter.
2. Prior to removing the lead wires, inspect the terminal
ends attached to the fuel pump. Some vehicles use a
locking terminal on which a tab must be depressed to
release the terminal. Remove the wires from the fuel
pump without damaging the terminal ends, as they are to
be reused. Note which wire is positive (+), and which
wire is negative (-).
3. Remove the four screws that hold the upper and lower
bracket sections together. Remove the lower section and
fuel pump isolator and set them aside.
4. Note the fuel pump’s orientation. Remove the hose
clamps and remove the fuel pump and fuel hose from the
pump bracket.
5. Install the new fuel hose onto the new fuel pump outlet
fitting and place the hose clamps over the fuel hose.
Install the fuel hose onto the pump bracket. With the fuel
pump properly positioned, tighten the hose clamps.
6. Install the fuel pump isolator over the end of the fuel
pump inlet. Place the lower section of the pump bracket
over the pump inlet and install the screws. Make sure
that the fuel pump is properly positioned in the
assembled bracket. If not, reposition the fuel pump as
7. Install the lead wires onto the pump terminals, making
sure that proper polarity is maintained.
8. While maintaining proper orientation, push the new filter
onto the pump inlet until it is fully seated.
9. Thoroughly inspect the pump and bracket for any
possible defects before installation into the tank.
1. Inspect the fuel tank for dirt and debris. If the amount of
dirt or debris is excessive, clean the fuel tank before
installing the bracket assembly.
2. Inspect the bracket to make sure it is clean and ready for
3. Place the supplied fuel tank o-ring seal in the groove at
the fuel tank opening. Place the bracket assembly into
the tank using care not to disturb the o-ring seal. Also
use care not to fold or twist the filter, as this could cause
restricted fuel flow. Install the locking ring and rotate it
clockwise until it is properly seated against the stops.
Check service manual for an approved sealant for locking
Page 3 of 4
Catalog #17931
Brochure #63-0221
1. Inspect the condition and location of all tank mounting
pads, insulators and brackets. Defective, missing or
mislocated pads and insulators will cause the
transmission of excessive noise into the vehicle.
2. Install the new fuel line retaining clips, 1/4” duckbill
style and 5/16” hair pin style, into their respectively
sized fuel line connector. With the 1/4” duckbill
retainer properly installed, the serrated edges should
protrude through the side opening of the fuel line
connector. The 5/16” hairpin clip is installed with the
triangular portion of the clip facing away from the fuel
line connector opening. (See Fig. 3).
1/4” Fuel Line
Fuel Line
5/16” Fuel Line
Should the fuel pump fail to operate:
Fuel Line
Retaining Clip
1. Check the fuel pump fuse and fuel pump relay as outlined
in the factory service manual.
2. If the pump has power and proper polarity, check the
remainder of the fuel system as outlined in the service
(Note: This pump will not remedy any malfunctions in
the fuel pressure regulator, fuel injectors, or other fuel
Fuel Line
Fuel Line
Retaining Clip
1. Using only equipment approved for use with gasoline,
refill the fuel tank with gasoline. (Note: Always clean
any gasoline spills immediately).
2. Inspect the fuel system for leaks. Repair any leaks before
3. With the ignition switch off, re-connect the negative
(ground) cable to the battery.
4. Turn the ignition key to the “Run” position only. This will
charge the fuel system. You may need to do this a few
times to get pressure. Once you have pressure, check for
any leaks and repair. Then, start engine and re-check for
leaks. (Note: Turn off engine and correct any leaks
before continuing.).
5. Clear any trouble codes in the electronic control unit
(ECU) that may exist as a result of the fuel pump
replacement procedure. Use the factory service manual
for assistance, if necessary.
Fig. 3
3. Inspect and correct any defects in the fuel hoses, filler
neck connections, or similar components related to the
fuel system.
4. Install the fuel tank in the vehicle and tighten the tanks
support strap bolts. Reconnect all lines and hoses and
tighten securely. Connect the electrical connections.
Make certain that all hoses, fittings, and electrical
connections are correctly and securely attached.
5. Be sure that all fuel lines are correctly routed and
secured in any mounting brackets. Make sure the
wiring harness is installed in the original position and
secured in any wire clips or brackets, if present.
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
Technical Toll-Free Hotline: (800) 416-8628 • Office: (310) 781-2222
E-Mail: Edelbrock@Edelbrock.com
©2003 Edelbrock Corporation
Rev. 11/03
Page 4 of 4
Catalog #17931
Brochure #63-0221