1989 GP SE Fuel Pump?

[89GPSE]

(Sorry in advance for the length)

Hi,

I have an 1989 Grand Prix SE 3.1 I have had this problem for a while but just have been letting it go because it was not bothering me. I noticed it about 3 months ago, when I turned the car off the fuel pump would be humming in the gas tank for the most part for about 30sec after I turned the car off. But sometimes as long as 10 min. Also when I was below 1/4 tank of gas and take a real hard turn at about 25mph or higher the car would stall or hesitate(thank the world for starting in neutral) . Also below a 1/4 tank the humming was real laud. So I have been keeping over a half tank of gas in there ever since I noticed. But now gas is $2.11 a gallon for reg. I am thinking of investing in a new pump now, so I can ride E for a while with less worry. Another thing I just checked to see is if it humms while it is running, it will humm while running but only after a long (at least 20min) ride. So I wanted to know If anyone else has had this experience, and also if you think I have the correct diagnosis. Also It look easy to drop the tank, has anyone here done a fuel pump an a GP that can tell me how long it took and if there were any tricks i should know

 

Thanks,

Justin

 

(sorry again for the long ass message)

[Brian P]

The pump could be on its way out, when you change it also check out the strainer/pickup assembly and see if everything checks out. Removing the tank isn't too hard, just disconnect the lines, fill tube, etc....electrical harness, then the 2 straps that hold it on- remove the front two bolts (keep the tank supported with a jack) then slowly lower the jack down. If you think the exhaust will be in the way, just remove the bolts to the muffler hangers and it will drop just enough.

[Guest Gp crazy]

you could change the fuel filter and see if there is a diffrence in sound.

of course you could kill the pump by doing this But you could save some time by doing this. it's up to you ?

[Baddflash]

It sounds like a dying pump to me and if you change it be careful if your lines are rusted. When changing the pump on my cutty a piece of rust got in the line and wrecked the pressure regulator on the rail. Long story but it sucked!!!

[cutlsp]

:? my cutlass's fuel pump humms sometimes but only after driving for over 50 miles :?

[89GPSE]

Thanks,

Do you think that I can get my fuel filter off without having to get new lines? It is a Buffalo car (every car here is rusted bad) the lines are rusted pretty bad but I only make $8.00/hr. so after bills the car does not get all that it needs. I would like to keep this project cheap, also how could changing my filter damage my pump? I just spent $327 doing my own custom 2.5 inch exhaust including a new 2.5 inch cat. It looks and sounds real nice. All mandrel bent tubing, all Stainless, all welded, no clamps at all and I ceramic coated it in red. It will most likely out last the car, but the car did only just hit 60,000 miles. I am thinking of selling the exhaust system I made to other W-Body owners as a kit. it all bolted up in the factory locations with the factory hangers welded on I could post pics if anyone is interested. Anyway back to my fuel filter and pump. let me know if you have changed a fuel filter on a really rusty fuel line and if the line broke or not so I can make a decision on to wait for my next paycheck to do the lines, pump, and filter all at once.

 

thanks again,

Justin

 

sorry again, it got long

[Guest Gp crazy]

spray the bolts that hold up the tank and the each end of the filter. try to do this for a few days get under the car & locate everything then spray with BLASTER or equilvent. if they are rusty like mine are i been spraying them for a while now & i hope mine come out easy with no beakage.

is your 89 a 5 speed ? or an auto ?

[GP1138]

If you're just changing the filter, remember to relieve fuel pressure by removing the fuel pump relay (on the driver's strut tower) and letting it run and die, or just cranking it.

 

I was in my automotive class last fall with the fuel filter right in front of my face, and I turned the wrench the next to last time to remove the side of one fuel line, and fuel sprayed all over the place, just as I moved my head.

[89GPSE]

I have an auto

[89GPSE]

Hi again,

Does anyone know of a High flow fuel pump for the 3.1? Also would it be a waste of money to get one? Also someone said before that changing my fuel filter now might kill my pump... How could it do that?

 

Thanks again,

Justin

[89GPSE]

you could change the fuel filter and see if there is a diffrence in sound.

of course you could kill the pump by doing this But you could save some time by doing this. it's up to you ?

[DiscoStudd]

Does anyone know of a High flow fuel pump for the 3.1?

 

Here's a link for the Walbro High Volume fuel pump from INTENSE Racing. This is the pump recommended when you do an L67 (Supercharged 3800 Series II) swap:

 

http://www.intense-racing.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=WFP-169&Category_Code=IF

 

I'm certain that it would work in your car, since many people who have done the swap have older W-Bodies. You don't need to do the motor swap if you just want the fuel pump, btw...