[Mobile-Portable] 96 Ford Bronco fuel pump

[Jim Sherwood]

Gary Fiber wrote:
> Ford did have a filter that went in line with the 
> pump for electrical noise. I had them install one 
> on my 1996 Ford Ranger but no longer have the information.
>
> Gary Fiber K8IZ
>
> At 11:19 PM 10/4/2009, you wrote:
>   
>> Group , I have never operated hf mobile with my 
>> 96 Bronco  and have no idea if its fuel pump is 
>> noisy ? Â  It is now at my mechanic with the 
>> fuel tank dropped awaiting a new oem fuel pump. 
>> With me picking up a new fuel pump this week and 
>> with now being the time to add any noise 
>>
>>     
Hi

This info is over 10 yrs old but it did work on my 95 Mercury. And ford 
installed
it at no charge, car was under warranty. Goes on fuel pump inside tank.



•- FUEL:SiffSTENPFUEL PUMP l'WHINING/BUZZING"'. •
NOISEt MEV-THROUGH. ENTERTAINMENT DTPiti
TWO-WAY'RADIO SPEAKER: P.*, YAVr-OWT
· RADIO—EMERTAINMENT‘OFf TY/041AV - :AAR 
COMMUNICATIONJ-4-"WMNINGIBUZZINGnINOISEIN SPEAKERS CAUSED BYVUEISPUMP 
,3:43,:'',A3AV.:
· NOISE="WHININGIBUZZING"--:CONIES ;THROUGH' • SPEAKERS OP 
ENTERTAINMENTOR ramvAy9;-- RADIO 984:3:1,

FORD: 1990-93 TEMPO
1990-97 PROBE,. THUNDERBIRD
1990-98 ESCORT, TAURUS
1990-99 CROWN VICTORIA, MUSTANG 1997-98 CONTOUR
LINCOLN-MERCURY: 1990-92 MARK VII
1990-93 TOPAZ
1990-96 CONTINENTAL
1990-97 COUGAR
1990-98 SABLE, TOWN CAR 1990-99 GRAND MARQUIS 1091198 TRACER
1997-98 MYSTIQUE
1997-99 MARK VIII
LIGHT TRUCK: 1990 BRONCO II 1990-96 BRONCO 1990-97 AEROSTAR, F SUPER 
DUTY, F-250 HD, F-350
1990-98 ECONOUNE
1990-99 F-150, F-250 LD, RANGER
1991-98 EXPLORER 1993-98 VILLAGER
1997-98 EXPEDITION, MOUNTAINEER, WINDSTAR
1998 NAVIGATOR
This TSB article is being republished in its entirety
to include 1997-99 model years for some vehicles.
ISSUE: A "whiningbuzzimf noise in the makers of the entertainment radio 
or two-way redo on vehicles with an in-lank electric fuel pump may be 
caused by electrical noise from the fuel pump.
ACTION: Install an electronic noise Redo Frequency interference (RH) 
filter (F1PZ-1813925-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 rep* details.
NOTE: SOME LIGHT TRUCKS REQUIRE ONE (1) RFI FILTER FOR EACH IN-TANK 
ELECTRIC FUEL PUMP ON MULTI-TANK VEHICLES.
Article No.
98-74
Cont'd. · FUEL SYSTEM—FUEL PUMP "WHINING/BUZZING" NOISE COMES THROUGH 
ENTERTAINMENT OR TWO-WAY RADIO SPEAKER
· RADIO—ENTERTAINMENT OR TWO-WAY COMMUNICATION—"WHINING/BUZ2JNG" NOISE 
IN SPEAKERS CAUSED BY FUEL PUMP
· NOISE—"WHINING/BUZZING"--COMES THROUGH SPEAKERS OF ENTERTAINMENT OR 
TWO-WAY RADIO


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 lix will not be effective. The following procedure well 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 Aim itui ignition key to the Run position (do not start the engine).
3. The fuel pump should run for about I 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 Service
Manuel, Section 24-35 for cars/light tucks and - Section 10-01 for 
compact trucks, for removal
procedure,J-4,-,
2. On wit ides without a fuel delvery module, ._remove Seinegatide mid 
positive connectors from the krel:purnp..FigUre
a. "Cut the-wires tethe fuel pump 76mm (31
from the flange of 'he fuel pram and discard the wires.
ti.7- CC:inflect/se RFI filter connectors to the
spade 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 (21) 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 TIE 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 CQMPLETED AWAY FROM 
THE FUEL TANK AREA. USE A SOLDERING IRON ONLY FOR SOLD_ERBIG AND HEAT 
GUN ONLY FOR APPLYING SHRINK. TUBING.
3. On light‘truded 'lid armed trucks ilith a fuel - delivery 
meckrkakiitlheitiel putupAUtes to tie flier cletiverf module 
Sdnreirybemlhe flange and discard thewireek -Figure 2.."'•
a. Cut the connectors from the RFI filter and solder wires to the fuel 
delivery module (red to red and black to bladc). Use heat stekik tubing 
over solder connections.
- b. Solder wires from the RFI Star 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 COMECT IONS
MADE PRIOR TO THIS TSB. USE SUFFICIENT TUBING (ABOUT 50mm (21) OF THE 
SPECIFIED TYPE TO ENTIRELY COVER EACH SOLDERED CONNECTION AND seem( 
AFTROPRIVELY TO PREVENT EXPOS
NOTE_ FOt weleCtze EXTREMELY
LONWFUEL PUMP 01iND WIRE CIRCUITS, IT MAY BE NECESSARY TO SHORTEN THE 
GROUND WIRE TO A POINT CLOSE TO THE FM. 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,
M.) FOR GROUND LOCATIONS.
WARMING: ALL SOLDERING AND HEAT SHRINKING MUST BE COMPLETED AWAY FROM 
TIE FUEL TANK AREA USE A SOLDERING IRON ONLY FOR SOLDERING AND HEAT GUN 
OILY FOR APPLYING SHRINK TUBING.
4. Secure the RFI filter to the fuel pump and sender assembly with a 
Bunding Strap (95873-5) to prevent rattling in the tank, Figures 1 and 2.
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. It 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 sears and protected from 
corrosion since it is the operating ground for the fuel pump.
1. Instal the fuel tank in the vehicle as outlined in the appropriate 
Service Manual.

PART NURSER PART NAME
Ft P1-1110925-A
954373-8 FSAZ-14/1099-AA Radio Frequency Interference (FIFO Filter
Bunging Strap
Heat Skink Tubing



-- 
Jim Sherwood,  N4UOZ
n4uoz at arrl.net