Bad fuel pump?

mustangLX92 · 07-06-2001, 08:02 PM

This is driving me crazy. My will be running fine and them it will just cut out. It doesnt stall out it just cuts off. could this have anything to do with the fuel system?

PKRWUD · 07-06-2001, 08:15 PM

When it dies, do the warning lights on the dash come on?

------------------
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MustangNet

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Casper5.0 · 07-06-2001, 11:16 PM

Does you pump wine? If it does then it's more than likely the pump. Mine did the same thing when my pump went out just sputters and died. It wined pretty loud for about 4 months before it died.

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94 cobra, steeda tri-ax, ultra flo's

14.2 @ 99 (stock)

mustangLX92 · 07-06-2001, 11:29 PM

No warning lights come on. And the pump does not whine. How can I determine if this cutting out problem is related to the fuel system?

jetuomi · 07-06-2001, 11:32 PM

How loud is this whining?? When I sit behind the car with it running, the fuel pump is about as loud as the exhaust (at idle)

is this right, or is this sign of it going to fail???

thanks...

------------------
94 Mustang GT (black on black)
K&N, MAC Shifter, FMS 9mm, 0017" rims, 3.27, 11*, MSD Coil, 180* thermostat, Clear Projectors, Euro Corners
My CAR!
Email me: jetuomi@yahoo.com

trbkrb · 07-07-2001, 05:23 PM

Based on my experiences with the fuel pump, I would say probably not. I've replaced two of them, and they both tended to to stall out - sputter and stumble for a few seconds, RPM goes up and down, as the fuel pressure goes to zero, and then the engine dies. Or the car would not start at all due to no or low fuel pressure. I did have an intermittent cut off where my car just died whenever I took off hard. After I jerked forward in my seat, a few seconds later, the car would come back to life - ended up being the relay for the computer, under the dash above the computer on my 87. My pumps also hum - not real loud, but you can hear it when you bend down by the rear lights. It is the stock Ford unit, and the current one is about 8 years old.

------------------
Basically stock 87 LX 5.0, owned since 3/31/1987. 216,000+ mile daily driver, GT interior, King Cobra clutch, World Class T-5, GT turbine wheels.
Plans: GT hatch & spoiler, rear disk brakes, and a PAINT JOB!

jetuomi · 07-07-2001, 06:37 PM

trb, okay thanks a lot !!!

PKRWUD · 07-07-2001, 06:49 PM

If your engine is dying, and the warning lights don't come on after it's died, then you've got a bad connection at your battery.

Take care
~Chris

------------------
Retired Moderator
MustangNet

My site: JimPorterRacing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

07-06-2001, 08:02 PM	#1
mustangLX92 Registered Member Join Date: May 2001 Location: Maryland Posts: 138	Bad fuel pump? This is driving me crazy. My will be running fine and them it will just cut out. It doesnt stall out it just cuts off. could this have anything to do with the fuel system?

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07-06-2001, 08:15 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	When it dies, do the warning lights on the dash come on? ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!

07-06-2001, 11:16 PM	#3
Casper5.0 Registered Member Join Date: Jun 2000 Location: Stillwater, OK Posts: 107	Does you pump wine? If it does then it's more than likely the pump. Mine did the same thing when my pump went out just sputters and died. It wined pretty loud for about 4 months before it died. ------------------ 94 cobra, steeda tri-ax, ultra flo's 14.2 @ 99 (stock)

07-06-2001, 11:29 PM	#4
mustangLX92 Registered Member Join Date: May 2001 Location: Maryland Posts: 138	No warning lights come on. And the pump does not whine. How can I determine if this cutting out problem is related to the fuel system?

07-06-2001, 11:32 PM	#5
jetuomi Registered Member Join Date: Dec 2000 Location: Waterloo, ON, Canada Posts: 214	How loud is this whining?? When I sit behind the car with it running, the fuel pump is about as loud as the exhaust (at idle) is this right, or is this sign of it going to fail??? thanks... ------------------ 94 Mustang GT (black on black) K&N, MAC Shifter, FMS 9mm, 0017" rims, 3.27, 11, MSD Coil, 180 thermostat, Clear Projectors, Euro Corners My CAR! Email me: jetuomi@yahoo.com

07-07-2001, 05:23 PM	#6
trbkrb Registered Member Join Date: Jul 2001 Location: Houston, TX Posts: 9	Based on my experiences with the fuel pump, I would say probably not. I've replaced two of them, and they both tended to to stall out - sputter and stumble for a few seconds, RPM goes up and down, as the fuel pressure goes to zero, and then the engine dies. Or the car would not start at all due to no or low fuel pressure. I did have an intermittent cut off where my car just died whenever I took off hard. After I jerked forward in my seat, a few seconds later, the car would come back to life - ended up being the relay for the computer, under the dash above the computer on my 87. My pumps also hum - not real loud, but you can hear it when you bend down by the rear lights. It is the stock Ford unit, and the current one is about 8 years old. ------------------ Basically stock 87 LX 5.0, owned since 3/31/1987. 216,000+ mile daily driver, GT interior, King Cobra clutch, World Class T-5, GT turbine wheels. Plans: GT hatch & spoiler, rear disk brakes, and a PAINT JOB!

07-07-2001, 06:37 PM	#7
jetuomi Registered Member Join Date: Dec 2000 Location: Waterloo, ON, Canada Posts: 214	trb, okay thanks a lot !!!

07-07-2001, 06:49 PM	#8
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	If your engine is dying, and the warning lights don't come on after it's died, then you've got a bad connection at your battery. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!