Fuel pump question (i've searched and didn't find anything)

[wyomingste]

My fuel pump went out yesterday when i was driving it. I know it is the fuel pump because there is no fuel in the fuel logs (or whatever they are called).

 

Now my question is that on some vehicles that I have owned you can remove the bottom part of the back seat and there is a pannel that can be removed to get access to the fuel pump without dropping the fuel tank. Would a 1991 Grand Prix STE have this or am I stuck with dropping the tank.

 

If there is no way but to drop the tank, what is the easiest way to drain some gas out of the fuel tank? I filled it up and then driving down the road it died.

 

Thanks for the help anyone can offer.

Eric Crusch

[19902drlumina]

most gms u have to drop the tank. ive seen thos on foreign cars. as far as draining it ive always had the car on ramps and put a bucket where the fill tube goes and slowly let a jack on the tank go down . or u can try to syphen it out with a hose no real easy way. id say its probly a 7out of 10 on hardest to do.

[GutlessSupreme]

You have to drop the tank.

 

easiest way would probably be to remove the filler neck from the tank and siphon it out through there.

 

lucky for me when I had to drop my tank to replace a line it was only 1/8 full so I didn't bother. It was still a huge pain in the ass though.

[wyomingste]

another thought that i just remembered doing on my old dodge truck... how hard would it be to put an inline pump (outside of the tank) on my grand prix or is this not even possible.

 

Thanks,

Eric

[Turbo231]

There is actually a vent line on the tank next to the filler hose that is pretty easy to get to and drain...in the W body FAQ section I changed by fuel pump...it might give you some tips when you do yours.

 

http://members.aol.com/regal231/fuel.htm

[wyomingste]

Does $200 sound like a fair price? The guy does a full warentee and if it blows he'll give you your money back and then put another pump in?

 

Thanks,

Eric

[19902drlumina]

doesnt sound bad when mine went the guy wanted $900 so i did it myself does it include parts?

[wyomingste]

yep that includes parts

[19902drlumina]

yea good price

[Bossman429]

It calls for 2 hrs of labor, plus the cost of the part, so $200 isn't too bad. Make sure it is the correct Corvette pump, can't put a regular W pump in a TSTE if yours is one.

 

doesnt sound bad when mine went the guy wanted $900 so i did it myself does it include parts?

$900!!!!! THAT is absurd!

[dbtk2]

It calls for 2 hrs of labor, plus the cost of the part, so $200 isn't too bad. Make sure it is the correct Corvette pump, can't put a regular W pump in a TSTE if yours is one.

 

His car is a '91. So no turbo or corvette pump for him....

[Guest TurboSedan]

i'd put the TGP pump in anyway. i used the TGP pump with a NA 3.1 for a long time with no issues.

 

yeah you have to drop the tank. i was never able to siphon out of the filler tube but siphoning from the vent might work. get ass end of the car up as high as possible, and then use a hydrualic jack with a large piece of plywood between the tank and jack. try to have a friend with you so one person can lower the jack and the other holds the tank steady and in place while it's being lowered out. you don't have to remove the front strap bolts but you do have to remove the rear bolts. some W-bodies use flare fitting and some use quick-disconnect. probably won't know for sure which you have until the tank is out.

[19902drlumina]

[quote name=

$900!!!!! THAT is absurd![/quote] yea i know he was a jerk

[wyomingste]

thanks for all the help everyone... i'm just going to have a shop do it for me, everyone down here priced between 400-700 for the fuel pump with parts added in and the shop i'm going with is 198 with all parts and the best guarentee (i've built 4 motors through him and he covered everyone except my 360 that was my fault).

 

Eric Crusch

[dbtk2]

i'd put the TGP pump in anyway. i used the TGP pump with a NA 3.1 for a long time with no issues.

 

I'm sure you can use it in an N/A car with no issues, but its a lot more expensive than the regular pump IIRC.

 

Shawn

[Guest TurboSedan]

nah, my TGP pump was right around $90...just a little more than the stock pump was. although i bought mine from Advance not GM.

[Bossman429]

At carquest the two pumps were close to the same price, the Vette pump might have even been cheaper. I can't remember, and I'm too lazy to open up the program and look it up.

[wyomingste]

The shop didn't have time to fix my car today and this being my only day off this week (I work 70+ hours a week in 6 days most of the time all 7). time came to do it myself after I was told he wouldn't be able to get to it for about a week although he told me he would work late tonight if needed something came up... so he says

 

First I had to drop the entire fucking exhaust from the cat back this took about half an hour,

next drop the exhaust guard which ran from the cat all the way back another 15 or so minutes,

I disconected all the lines and the wire harness about 5 minutes,

I had to drop the front strap bolts (the rears were under the rear suspension) about an hour because of the stuff i had to move and mark,

I dropped the tank out and changed the pump (I used the corvette pump) and screen (the old screen was rusted and massively clogged took about 10 minutes to do this,

when putting the tank in it took about 3 hours because i couldn't get the filler and vent hoses back on- also under the rear suspension which gave me about 2 inches to get my hands in and connect them then clamp them in,

it took me about an hour to get the straps back on because i had to bend them to get the tank out,

after that it took about half an hour to get the exhaust back on.

 

Total time-->about 4-5 hours including cigarette breaks (away from the car gas and fire added makes a big fire )

 

I have it all put back together and it runs perfectly now except a little bit of a rough idle (spark plugs and wires need replaced i'll do it next wednesday i know now that i can undo the upper motor mounts (dogbones) and rock the motor forward and there is a 2nd hole on the drivers dogbone that holds the motor, ).

I replaced my air filter today also, i put in a cone filer and removed my factory air box, i used the factory intake tube (the filter is mounted tightly - i made sure to relocate the MAF sensor (on the stock air box i'm not sure it its a MAF or what so i'm gonna call it one) to the intake tube or whatever it is called.

I also need to replace the upper motor mounts (dogbones) because they are going bad, the rubber in them is cracked and the motor will jump back and forth just at an idle because of this, at partial throdle it jumps towards the firewall about 2 inches.

 

just wanted to let you know that i got my car working, it only cost me 90 for everything (new pump, screen, and cone filter).

 

How much does it sound like it will cost (rough estimates are fine) to get the rest of the car done?

 

Thanks for the help all,

Eric

[mfewtrail]

If I were you, I would purchase one of these(they are the Turbo Grand Prix/Corvette fuel pumps mentioned above) and then take it to the shop and have them just charge you labor if you don't want to install it yourself.

 

http://cgi.ebay.com/ebaymotors/NEW-AC-DELCO-FUEL-PUMP-KIT-EP375-25163463-FE0110_W0QQcmdZViewItemQQcategoryZ33555QQitemZ7990189267QQrdZ1QQsspagenameZWD1V#ebayphotohosting

 

Good price there, cheaper than you can get it through a parts store even after shipping.

 

By the way, pretty sure TurboSedan above meant to say "remove only the front strap tank bolts." The rear are in a place that doesn't allow very much access...so don't bother with those.

[mr_merkur]

I'd check the fueses and try swapping the fuel filter first, you have more to gain then to loose and you should change your fuel filter out once and a while to. may save you some time and hastle

 

* my bad dint realize you already had it done*

[Guest TurboSedan]

By the way, pretty sure TurboSedan above meant to say "remove only the front strap tank bolts." The rear are in a place that doesn't allow very much access...so don't bother with those.

 

doh! you are correct Matt.