| Author |
Message |
    
Shrek
| | Posted on Thursday, August 08, 2002 - 7:45 am: | 
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I have a 99 crown vic (police car). I just installed a cobra 29 LTD classic and a wilson 1000 antenna. my cb is wired directly to the battery. I am getting so much noise from the electric fuel pump that I'm loosing boatloads of recieve. Its driving me nuts!!!!! Will filters really help or do I have to live with it??? If so, what are the best filters...and how do I find the location that they are to be installed?
Has anyone here had the same experiance? |
Tech671
| | Posted on Thursday, August 08, 2002 - 11:05 pm: |
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If you own a Ford, print this and take it to the dealer...
> 99-12. Publication Date: JUNE 7, 1999
> Article No. 99-12-9
>
> Fuel System - Fuel Pump "Whining"/ Buzzing" Noise
> Comes Through Entertainment Or Two-Way Radio Speaker
>
> Radio - Entertainment Or Two-Way Communication -
> "Whining"/"Buzzing Noise in Speakers Caused By Fuel
> Pump
>
> Noise - "Whining"/Buzzing" - Comes Through Speakers Of
> Entertainment Or Two-Way Radio
> FORD:
>
> 1990-93 TEMPO
> 1990-97 PROBE, THUNDERBIRD
> 1990-99 CROWN VICTORIA, ESCORT, MUSTANG, TAURUS
> 1997-99 CONTOUR
>
> LINCOLN-MERCURY:
>
> 1990-92 MARK VII
> 1990-93 TOPAZ
> 1990-97 COUGAR
> 1990-99 CONTINENTAL, GRAND MARQUIS, SABLE, TOWN CAR
> 1991-99 TRACER
> 1997-98 MARK VIII
> 1997-99 MYSTIQUE
> 1999 COUGAR
>
> LIGHT TRUCK:
>
> 1990 BRONCO II
> 1990-96 BRONCO
> 1990-97 AEROSTAR, F SUPER DUTY, F-250 HD, F-350
> 1990-99 ECONOLINE, F-150, F-250 LD, RANGER
> 1991-99 EXPLORER
> 1993-99 VILLAGER
> 1997-99 EXPEDITION, MOUNTAINEER, WINDSTAR
> 1998-99 NAVIGATOR
> 1999 SUPER DUTY F SERIES
>
> This TSB article is being republished in its entirety
> to include 1997-1999 model year vehicles.
>
> 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 TAURUS FLEIBLE FUEL VEHICLES
> (FFVs) OR 1999 RANGER 3.0
>
> 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:
>
> 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).
> Turn the ignition key to the Run position (do not
> start the engine).
> 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
>
> Remove the fuel pump sender assembly from the fuel
> tank. Refer to the appropriate Service Manual, Section
> 24-35 for cars/light trucks and Section 10-01 for
> compact trucks, for removal procedure.
> On vehicles without a fuel delivery module, remove the
> negative and positive connectors from the fuel pump,
> >.
> 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 SPECIFIELD 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. |
Bigbob
| | Posted on Friday, August 09, 2002 - 8:55 pm: |
|
HEY,hELLO tech 671 I got a '96 chevy pick-up with exactly the same problem,what to do? |
Tech671
| | Posted on Friday, August 09, 2002 - 9:52 pm: |
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Bob, I don't have any literatur for Chevy, but you can copy the Ford data and take it to your dealer describing the same symptoms.
The Chevys don't have NEAR the noise problem of Ford, so consider yourself lucky. If the dealer is uncooperative, locate the fuel pump on your truck (usually on the driver's frame rail). Splice a high quality noise filter inline with the +/- of the pump and make sure connections are soldered and insulated. (Don't forget to disconnect power from battery). |
409
| | Posted on Monday, August 12, 2002 - 4:32 am: |
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Some of the noise you hear is from the on-board computer. I have the same problem on my ranger. Not really any fix for this type of noise..... |
Barefoot
| | Posted on Monday, August 12, 2002 - 12:22 pm: |
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I drive a Ranger( company truck) the noise is so bad I can only receive when it,s shut off . I put the same radios in my car ( Pontiac) and they are fine . |
409
| | Posted on Tuesday, August 13, 2002 - 5:19 am: |
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I can pull the fuse on my fuel pump with no difference in noise. The computer noise is very distinct for anyone who owns a computer. The on-board computer in my truck is mounted on the passenger side kick panel. The noise is strong enough to knock out all low level signals on the CB. |
Tech671
| | Posted on Tuesday, August 13, 2002 - 6:04 am: |
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409,
I'd suggest trying the dealer for a fix ... (probably not) or try some various grounding/shielding. |
Bigbob
| | Posted on Thursday, August 15, 2002 - 7:49 pm: |
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My fuel pump is inside my 35 gal. gasoline tank,bummer-drag. |
Scrapiron63
| | Posted on Thursday, August 15, 2002 - 8:19 pm: |
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The fuel pump is inside my tank also, but I cut the wires as close to the tank as possible, installed the filter, and stopped the noise. I know several that has done the same. |
Stepchild
| | Posted on Monday, November 18, 2002 - 9:30 pm: |
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Any Tech,When you install the filter for the fuel pump noise,do you need to seal the unit in any way to protect from water damage?I have a filter from radio shack but not sure were its at. (stored in the garage)What would you suggest for 2000 chevy silverado? |
Low_Eskimo
| | Posted on Tuesday, December 03, 2002 - 2:24 am: |
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The Mid 90's Dodge Rams have very loud computers and electrical systems. I went around the truck putting noise filters on every thing I could think of and finally gave up. |
Tech671
| | Posted on Tuesday, December 03, 2002 - 5:47 am: |
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Stepchild sorry I missed this post...
Yes weather seal it and install it as close to the pump as possible, same for the Ford and Dodge. Some pumps are in the tank, so the tank will have to be dropped and filter installed outside as close to the pumas possible WARNING: disconnect battery when doing this!!!! |
Slickasice
| | Posted on Wednesday, March 19, 2003 - 7:03 pm: |
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Any Tech..I have A 96' Pontiac and I Get A Steady (high frequency noise) through my radio (2950). Someone says it's the Fuel pump..When I take the K-40 (well Grounded) Off, the noise disappear.. So What Type Of Noise filter do I need to get to Put in-line At the fuel pump??..And will it Help If Hook up my radio(s) And others things to the Battery?...
Thanks.... |
Ironmask
| | Posted on Thursday, March 20, 2003 - 12:43 am: |
|
Slickasice,
Is this noise you speak of with the engine running or the key in the run position?
If the noise goes away when the antenna is removed then filtering the power leads would not improve any thing.
If it were a power lead noise, Alternator or other electrical feed noise it would happen with the engine on.
Per what you have stated, the noise is entering thru the antenna and filtering the fuel pump power will not improve the situation.
Hope this helps. |
Tech671
| | Posted on Thursday, March 20, 2003 - 5:55 am: |
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Before you start filtering the fuel pump, try sticking the K40 in different locations (on the car) to see if the noise lessens. ( I had to chuckle after I wrote this  ) |
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