Fuel pump whine

sgwinn · 03-02-2001, 12:16 PM

I've noticed that my fuel pump has a louder high pitched whine lately. Is this trying to tell me it's about ready to implode?

84_GT350 · 03-02-2001, 02:12 PM

In short....yes. It sounds like it's about to crap out on you. Change it ASAP.

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1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

2FastLX · 03-02-2001, 02:39 PM

I've had my car for nearly a year now and my pump whines as well, but still works. Someone told me a lot of the pumps do this. I just ordered a 190lph pump so she won't be whining much longer =)

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Buy your parts here

Green92LX · 03-02-2001, 02:53 PM

It should whine to some extent, but if it is choppy sounding and the sound fluctuates, rip that baby out and throw it in your neighbors yard!!!

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1992 5.0 LX, V-1 S-Trim @8LBS, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,MSD 6A and BTM, BBK equal length shorties, offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, Dark Green w/ 93 Cobra Spoiler

Daily driver: 89 Coupe with 207K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps

DemonGT · 03-02-2001, 06:50 PM

when i turn my key on so the fuel pump starts mine whines loud to...but works fine...iv heard that mustangs are known for whiny fuel pumps....

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'91 GT,91K,T-5,air silencer removed,racing clutch(previous owner put in so dont know what kind),K&N air filter,Aiwa deck,power acoustic amp,2 12" pianeers,UPDATE: Just got my Mac long tube headers and Cat-back

Future Mods:3.73's,Pro 5.0,Shifter knob,FMS 9mm wires

blue00gt · 03-02-2001, 07:39 PM

They definitely do whine, but if the sound has changed or gotten louder as SGWINN indicated, that is definitely a sign it is on its way out.

03-03-2001, 12:48 AM

All fuel injected mustangs and ford trucks have that whine (it was VERY loud in my '91) so it may not be a problem. Of course, the power steering pump soon overcame that noise...but that's a different subject.

03-02-2001, 12:16 PM	#1
sgwinn Registered Member Join Date: Feb 2001 Posts: 84	Fuel pump whine I've noticed that my fuel pump has a louder high pitched whine lately. Is this trying to tell me it's about ready to implode?

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03-02-2001, 02:12 PM	#2
84_GT350 Registered Member Join Date: Apr 1999 Location: Overland Park, KS, USA Posts: 1,631	In short....yes. It sounds like it's about to crap out on you. Change it ASAP. ------------------ 1984 1/2 GT350 (#842 Hatchback w/ T-tops), 302HO, Comp cams Xtreme Energy cam, Carter 625cfm carb, Weiand Stealth intake, MSD distributor, MSD coil, FMS 9mm wires, 1 5/8" MAC unequal shorties, 2 1/2" MAC Prochamber H-pipe, Flowmaster 2 chambers, KYBs, 16"x8" 4 lug Cobra Rs, Falken 245/45ZR16s

03-02-2001, 02:39 PM	#3
2FastLX The Photoshop Guru Join Date: Feb 2001 Location: Mecca, Indiana Posts: 1,419	I've had my car for nearly a year now and my pump whines as well, but still works. Someone told me a lot of the pumps do this. I just ordered a 190lph pump so she won't be whining much longer =) ------------------ Buy your parts here

03-02-2001, 02:53 PM	#4
Green92LX Registered Member Join Date: Jun 1999 Location: North Haven,CT Posts: 336	It should whine to some extent, but if it is choppy sounding and the sound fluctuates, rip that baby out and throw it in your neighbors yard!!! ------------------ 1992 5.0 LX, V-1 S-Trim @8LBS, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,MSD 6A and BTM, BBK equal length shorties, offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, Dark Green w/ 93 Cobra Spoiler Daily driver: 89 Coupe with 207K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps

03-02-2001, 06:50 PM	#5
DemonGT Registered Member Join Date: Aug 2000 Location: Wisconsin Posts: 879	when i turn my key on so the fuel pump starts mine whines loud to...but works fine...iv heard that mustangs are known for whiny fuel pumps.... ------------------ '91 GT,91K,T-5,air silencer removed,racing clutch(previous owner put in so dont know what kind),K&N air filter,Aiwa deck,power acoustic amp,2 12" pianeers,UPDATE: Just got my Mac long tube headers and Cat-back Future Mods:3.73's,Pro 5.0,Shifter knob,FMS 9mm wires

03-02-2001, 07:39 PM	#6
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	They definitely do whine, but if the sound has changed or gotten louder as SGWINN indicated, that is definitely a sign it is on its way out.

03-03-2001, 12:48 AM	#7
84stang83zephyr Guest Posts: n/a	All fuel injected mustangs and ford trucks have that whine (it was VERY loud in my '91) so it may not be a problem. Of course, the power steering pump soon overcame that noise...but that's a different subject.