Tsb 99129
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
Article No. 01-7-3
FORD:
1990 BRONCO II
1990-1996 BRONCO
1990-1997 AEROSTAR, F SUPER DUTY, F-250 HD, F-350
1990-1999 F-250 LD
1990-2001 ECONOLINE, F-150, RANGER
1991-2001 EXPLORER
1995-2001 WINDSTAR
1997-2001 EXPEDITION
1999-2001 SUPER DUTY F SERIES
2000-2001 EXCURSION
2001 ESCAPE
LINCOLN: 1998-2001 NAVIGATOR
MERCURY: 1997-2001 MOUNTAINEER
ISSUE
A “whining”/“buzzing” noise in the speakers of the
entertainment radio or two-way radio on vehicles
with an in-tank electric fuel pump may be caused
by electrical noise from the fuel pump.
ACTION
Install an electronic noise Radio Frequency
Interference (RFI) Filter (F1PZ-18B925-A) on the
fuel pump inside the fuel tank. Refer to the
following Test Procedure to confirm that the concern
exists, then refer to the Service Procedure for repair
details.
NOTE
SOME LIGHT TRUCKS REQUIRE ONE (1) RFI
FILTER FOR EACH IN-TANK ELECTRIC FUEL
PUMP ON MULTI-TANK VEHICLES.
NOTE
THIS TSB DOES NOT INCLUDE FLEXIBLE
FUEL VEHICLES
TEST PROCEDURE
Fuel pump radio noise is relatively constant and
changes only slightly with vehicle speed. If the
frequency of the noise varies or the noise comes
and goes with the vehicle speed, then it is not the
fuel pump and this fix will not be effective. The
following procedure will help determine if the fuel
pump is the cause of the radio noise:
1. Turn on the radio before the key is turned on
(assuming the radio will operate without the
ignition key - you may need to put the ignition
key in the Accessory position).
2. Turn the ignition key to the Run position (do
not start the engine).
3. The fuel pump should run for about 1 second
with the key in the Run position with the engine
not running. Listen for noise in the radio. If
noise is present while the pump is running and
stops when the pump stops, then the noise is
being generated by the pump and this
procedure should help.
SERVICE PROCEDURE
1. Remove the fuel pump sender assembly from
the fuel tank. Refer to the appropriate model
year Workshop Manual for removal procedure.
2. On vehicles without a fuel delivery module,
remove the negative and positive connectors
from the fuel pump, Figure 1.
a. Cut the wires to the fuel pump 76mm (3")
from the flange of the fuel pump and
discard the wires.
b. Connect the RFI filter connectors to the
spade terminal on the fuel pump.
c. Cut and solder both the red and black wires
of the RFI filter to the red and black wires
of the flange. Use Heat Shrink Tubing
(F5AZ-14A099-AA) over the solder
connections.
NOTE
HEAT SHRINK TUBING MUST BE USED OVER
ALL SOLDERED CONNECTIONS MADE PRIOR
TO THIS TSB. USE SUFFICIENT TUBING
(ABOUT 50mm (2") OF THE SPECIFIED TYPE
TO ENTIRELY COVER EACH SOLDERED
CONNECTION AND SHRINK APPROPRIATELY
TO PREVENT EXPOSURE OF THE
CONNECTIONS.
NOTE
FOR SOME VEHICLES WITH EXTREMELY LONG
FUEL PUMP GROUND WIRE CIRCUITS, IT MAY
BE NECESSARY TO SHORTEN THE GROUND
WIRE TO A POINT CLOSE TO THE FUEL TANK.
IF THE GROUND IS MOVED, BE SURE IT IS
SECURE AND PROTECTED FROM CORROSION
SINCE IT IS THE OPERATING GROUND FOR
THE PUMP. CHECK SERVICE LITERATURE
(EVTM, ETC.) FOR GROUND LOCATIONS.
WARNING
ALL SOLDERING AND HEAT SHRINKING MUST
BE COMPLETED AWAY FROM THE FUEL TANK
AREA. USE A SOLDERING IRON ONLY FOR
SOLDERING AND HEAT GUN ONLY FOR
APPLYING SHRINK TUBING.
3. On light trucks and compact trucks with a fuel
delivery module, cut the fuel pump wires to the
fuel delivery module 50mm (2") from the flange
and discard the wires.
a. Cut the connectors from the RFI filter and
solder wires to the fuel delivery module (red
to red and black to black). Use heat shrink
tubing over solder connections.
b. Solder wires from the RFI filter to the flange
wires (red to red and black to black). Use
heat shrink tubing over soldered
connections.
NOTE
HEAT SHRINK TUBING MUST BE USED OVER
ALL SOLDERED CONNECTIONS MADE PRIOR
TO THIS TSB. USE SUFFICIENT TUBING
(ABOUT 50mm (2") OF THE SPECIFIED TYPE
TO ENTIRELY COVER EACH SOLDERED
CONNECTION AND SHRINK APPROPRIATELY
TO PREVENT EXPOSURE OF THE
CONNECTIONS.
NOTE
FOR SOME VEHICLES WITH EXTREMELY LONG
FUEL PUMP GROUND WIRE CIRCUITS, IT MAY
BE NECESSARY TO SHORTEN THE GROUND
WIRE TO A POINT CLOSE TO THE FUEL TANK.
IF THE GROUND IS MOVED, BE SURE IT IS
SECURE AND PROTECTED FROM CORROSION
SINCE IT IS THE OPERATING GROUND FOR
THE PUMP. CHECK SERVICE LITERATURE
(EVTM, ETC.) FOR GROUND LOCATIONS.
WARNING
ALL SOLDERING AND HEAT SHRINKING MUST
BE COMPLETED AWAY FROM THE FUEL TANK
AREA. USE A SOLDERING IRON ONLY FOR
SOLDERING AND HEAT GUN ONLY FOR
APPLYING SHRINK TUBING.
4. Secure the RFI filter to the fuel pump and
sender assembly with a Bundling Strap
(95873-S101) to prevent rattling in the tank.
5. Reinstall the fuel pump sender assembly into
the fuel tank.
CAUTION
INSTALL NEW GASKETS WHEN REINSTALLING
SENDER TO PREVENT LEAKS. REFER TO THE
PARTS CATALOG FOR PROPER APPLICATIONS.
6. Check the appropriate Electrical and Vacuum
Troubleshooting Manual (EVTM) (or other
service literature) for the location of the fuel
pump ground. If ground is more than 0.9m (3')
from the tank, cut wire and ground fuel pump
end within 0.9m (3') of the tank to prevent
ground wire from acting as an antenna. Be sure
ground is secure and protected from corrosion
since it is the operating ground for the fuel
pump.
7. Install the fuel tank in the vehicle as outlined in
the appropriate Service or Workshop Manual.
PART NUMBER / PART NAME
F1PZ-18B925-A / Radio Frequency Interference (RFI) Filter
95873-S101 / Bundling Strap
F5AZ-14A099-AA / Heat Shrink Tubing
FORD:
1990 BRONCO II
1990-1996 BRONCO
1990-1997 AEROSTAR, F SUPER DUTY, F-250 HD, F-350
1990-1999 F-250 LD
1990-2001 ECONOLINE, F-150, RANGER
1991-2001 EXPLORER
1995-2001 WINDSTAR
1997-2001 EXPEDITION
1999-2001 SUPER DUTY F SERIES
2000-2001 EXCURSION
2001 ESCAPE
LINCOLN: 1998-2001 NAVIGATOR
MERCURY: 1997-2001 MOUNTAINEER
ISSUE
A “whining”/“buzzing” noise in the speakers of the
entertainment radio or two-way radio on vehicles
with an in-tank electric fuel pump may be caused
by electrical noise from the fuel pump.
ACTION
Install an electronic noise Radio Frequency
Interference (RFI) Filter (F1PZ-18B925-A) on the
fuel pump inside the fuel tank. Refer to the
following Test Procedure to confirm that the concern
exists, then refer to the Service Procedure for repair
details.
NOTE
SOME LIGHT TRUCKS REQUIRE ONE (1) RFI
FILTER FOR EACH IN-TANK ELECTRIC FUEL
PUMP ON MULTI-TANK VEHICLES.
NOTE
THIS TSB DOES NOT INCLUDE FLEXIBLE
FUEL VEHICLES
TEST PROCEDURE
Fuel pump radio noise is relatively constant and
changes only slightly with vehicle speed. If the
frequency of the noise varies or the noise comes
and goes with the vehicle speed, then it is not the
fuel pump and this fix will not be effective. The
following procedure will help determine if the fuel
pump is the cause of the radio noise:
1. Turn on the radio before the key is turned on
(assuming the radio will operate without the
ignition key - you may need to put the ignition
key in the Accessory position).
2. Turn the ignition key to the Run position (do
not start the engine).
3. The fuel pump should run for about 1 second
with the key in the Run position with the engine
not running. Listen for noise in the radio. If
noise is present while the pump is running and
stops when the pump stops, then the noise is
being generated by the pump and this
procedure should help.
SERVICE PROCEDURE
1. Remove the fuel pump sender assembly from
the fuel tank. Refer to the appropriate model
year Workshop Manual for removal procedure.
2. On vehicles without a fuel delivery module,
remove the negative and positive connectors
from the fuel pump, Figure 1.
a. Cut the wires to the fuel pump 76mm (3")
from the flange of the fuel pump and
discard the wires.
b. Connect the RFI filter connectors to the
spade terminal on the fuel pump.
c. Cut and solder both the red and black wires
of the RFI filter to the red and black wires
of the flange. Use Heat Shrink Tubing
(F5AZ-14A099-AA) over the solder
connections.
NOTE
HEAT SHRINK TUBING MUST BE USED OVER
ALL SOLDERED CONNECTIONS MADE PRIOR
TO THIS TSB. USE SUFFICIENT TUBING
(ABOUT 50mm (2") OF THE SPECIFIED TYPE
TO ENTIRELY COVER EACH SOLDERED
CONNECTION AND SHRINK APPROPRIATELY
TO PREVENT EXPOSURE OF THE
CONNECTIONS.
NOTE
FOR SOME VEHICLES WITH EXTREMELY LONG
FUEL PUMP GROUND WIRE CIRCUITS, IT MAY
BE NECESSARY TO SHORTEN THE GROUND
WIRE TO A POINT CLOSE TO THE FUEL TANK.
IF THE GROUND IS MOVED, BE SURE IT IS
SECURE AND PROTECTED FROM CORROSION
SINCE IT IS THE OPERATING GROUND FOR
THE PUMP. CHECK SERVICE LITERATURE
(EVTM, ETC.) FOR GROUND LOCATIONS.
WARNING
ALL SOLDERING AND HEAT SHRINKING MUST
BE COMPLETED AWAY FROM THE FUEL TANK
AREA. USE A SOLDERING IRON ONLY FOR
SOLDERING AND HEAT GUN ONLY FOR
APPLYING SHRINK TUBING.
3. On light trucks and compact trucks with a fuel
delivery module, cut the fuel pump wires to the
fuel delivery module 50mm (2") from the flange
and discard the wires.
a. Cut the connectors from the RFI filter and
solder wires to the fuel delivery module (red
to red and black to black). Use heat shrink
tubing over solder connections.
b. Solder wires from the RFI filter to the flange
wires (red to red and black to black). Use
heat shrink tubing over soldered
connections.
NOTE
HEAT SHRINK TUBING MUST BE USED OVER
ALL SOLDERED CONNECTIONS MADE PRIOR
TO THIS TSB. USE SUFFICIENT TUBING
(ABOUT 50mm (2") OF THE SPECIFIED TYPE
TO ENTIRELY COVER EACH SOLDERED
CONNECTION AND SHRINK APPROPRIATELY
TO PREVENT EXPOSURE OF THE
CONNECTIONS.
NOTE
FOR SOME VEHICLES WITH EXTREMELY LONG
FUEL PUMP GROUND WIRE CIRCUITS, IT MAY
BE NECESSARY TO SHORTEN THE GROUND
WIRE TO A POINT CLOSE TO THE FUEL TANK.
IF THE GROUND IS MOVED, BE SURE IT IS
SECURE AND PROTECTED FROM CORROSION
SINCE IT IS THE OPERATING GROUND FOR
THE PUMP. CHECK SERVICE LITERATURE
(EVTM, ETC.) FOR GROUND LOCATIONS.
WARNING
ALL SOLDERING AND HEAT SHRINKING MUST
BE COMPLETED AWAY FROM THE FUEL TANK
AREA. USE A SOLDERING IRON ONLY FOR
SOLDERING AND HEAT GUN ONLY FOR
APPLYING SHRINK TUBING.
4. Secure the RFI filter to the fuel pump and
sender assembly with a Bundling Strap
(95873-S101) to prevent rattling in the tank.
5. Reinstall the fuel pump sender assembly into
the fuel tank.
CAUTION
INSTALL NEW GASKETS WHEN REINSTALLING
SENDER TO PREVENT LEAKS. REFER TO THE
PARTS CATALOG FOR PROPER APPLICATIONS.
6. Check the appropriate Electrical and Vacuum
Troubleshooting Manual (EVTM) (or other
service literature) for the location of the fuel
pump ground. If ground is more than 0.9m (3')
from the tank, cut wire and ground fuel pump
end within 0.9m (3') of the tank to prevent
ground wire from acting as an antenna. Be sure
ground is secure and protected from corrosion
since it is the operating ground for the fuel
pump.
7. Install the fuel tank in the vehicle as outlined in
the appropriate Service or Workshop Manual.
PART NUMBER / PART NAME
F1PZ-18B925-A / Radio Frequency Interference (RFI) Filter
95873-S101 / Bundling Strap
F5AZ-14A099-AA / Heat Shrink Tubing
Thread Starter
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Posting Guru
Joined: Nov 2003
Posts: 1,387
Likes: 0
thanks for the quick reply rockledge. I was hoping it wouldn't be that involve. I think i will live with it. it only does it with AM stations luckily but I do like listening to ball games while i am on the road.
Freshman User
Joined: Oct 2005
Posts: 32
Likes: 0
maybe you can help me
i have a 2003 fx4 ranger and i just installed a pretty nice high end cb. i got everything installed (double and triple checked). when i turn the key i get a lil noise interference and when i start it 1/4 of the sound generated is engine noise. i've tryed re routing power and antenna wires, grounding, and re-grounding. ugh i've tryed everything. it's starting to **** me off, it sounds great when the truck is off, great. but i need to use it 98% of the time when the truck is on. any ideas?
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