: Is my fuel pump failing

07-06-09, 03:14 AM
I don't normally let my fuel level get real low but the other day I was running
late so I didn't stop. I knew from past experience that I can travel a good
distance with the "LOW" indicator on and at least 10 to 15 miles more when it is
flashing. This time however, the "LOW" indicator came on and soon after the car
was acting as if it was running out of fuel. (hesitation, sputtering, underhood
The check engine light came on setting a PO300 (mis-fire).
Luckily I was just barely able to make it to a station. After filling up,all
seemed normal. Any suggestions are greatly appreciated.
1996 LT1 Fleetwood 82000 miles

Matt F.
Scottsdale Az

07-06-09, 08:50 AM
Sounds like you just got low on gas. Did the check engine light go off? I dont trust my gauge anywhere past low. I ran out of gas and stalled on low but also ran after it was blinking so I think that when it says low, the car does what it wants.

00 Deville
07-06-09, 09:18 AM
Sounds like you were running on fumes. Just don't make a habit out of it the fuel in the tank is also used to cool the pump.

07-06-09, 03:14 PM
I would agree except for in the past I have gone up to 30 miles plus even after "low" lights up.

07-06-09, 04:27 PM
if it starts doing that again, and more frequent
I would look at the fuel pump harness (in tank)
they are famous for melting, the small spades turn black and
will intermittently let the current flow, or so much resistance
that it wont turn at full speed
there is a fix for this, carter ind, makes a bullit proof harness to replace
the weak fact one, I hAVE THE PART # SOMEWHERE
Ive done this on 3 fleetwoods in the last 4 years

07-06-09, 07:34 PM
Sounds like you were running on fumes. Just don't make a habit out of it the fuel in the tank is also used to cool the pump.

Took the words right out of my mouth. My mechanic advised not running the fuel level too low as it can create air sucking on turns and lead to pump overheating. This can bring about premature pump failure.

Mine died in a snow storm......not fun. There's now a better than OE spec pump in the tank so I try to protect it now.


07-07-09, 05:12 PM
I guess it may depend on the driving that was being done. When you run it down to low, you got to remember, your running on a level of gas that may be only a few inches deep. Take a few hard turns, or hit the brakes hard, the fuel sloshes forward, and up goes the air, into the pump, losing its prime for long enough to kill your engine. I ran out of fuel once in my 79 camaro about 10 yrs ago, ever since then I start looking for a filling station at 1/4 tank. I told myself "That will NOT happen again."

07-07-09, 10:17 PM
heres the carter part ---#Carter 888536 Fuel Pump Wiring Harness
this is a real nice replacement for the factory harness pig tail
it is a high quality part
make sure to clean the 4 contacts before plugging in the new harness
one of those cheap finger nail files works good, remove any signs of oxidation

I went as far as to solder ,all 4 connections, at the sender cover
to eliminate any future issues

carter # 888536
94-96 c/f/b in tank fuel pump harness/sender pigtail

rock auto should have them or order anywhere