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Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Old 11-18-2016, 01:46 PM   #1
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Fuel Pump Replacement; How high does the rear of car need to be in the air?

Hey all so i really need to get this tpi pump into my tank. I want to do the job myself just not sure if i have the ability to do it in my garage. All i have is a floor jack and set of jack stands. What im curious about is how high off the ground does the a$$ of the car need to be in order to be able to have the rear end dropped, and then wiggle the tank out?

How did you do it?

Is this possible with a floor jack/stands?

Would you have paid some one to do it again?

Enlighten me with some success stories!

Thanks for your time and information!

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Old 11-18-2016, 03:04 PM   #2
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

About 40 inches from ground to arch of wheel well. What I found out is to get the front up about a foot also. Put it on Race Ramps. That way it doesn't "look as bad" and will give a little room if you need to disconnect the pipe at the Cat. HTH

Myself and a buddy did it start to finish in 4 hours
It was easy, no rusted parts/bolts
And when it was over with, we had pizza and beer. Good times

And saved around 400 bucks

Get a quality pump/screen sock and all, and if you have spendable income, put in a new float assembly

Was not bad at all. That was 15 years ago, 100k miles, with a GM pump. Drove the car yesterday. No issues

Bob

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Old 11-18-2016, 03:14 PM   #3
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

As stated above, but basically just high enough for the rear end to drop down as much as it will allow. Once it stops, there's no point to go any higher.

If you don't run into any really stupid stuff like I did, you should be fine. I was swapping my tank and the elbow was at a different angle, wouldn't go in. That was a few days of headache/welding/etc.
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Old 11-19-2016, 12:01 AM   #4
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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About 40 inches from ground to arch of wheel well. What I found out is to get the front up about a foot also. Put it on Race Ramps. That way it doesn't "look as bad" and will give a little room if you need to disconnect the pipe at the Cat. HTH

Myself and a buddy did it start to finish in 4 hours
It was easy, no rusted parts/bolts
And when it was over with, we had pizza and beer. Good times

And saved around 400 bucks

Get a quality pump/screen sock and all, and if you have spendable income, put in a new float assembly

Was not bad at all. That was 15 years ago, 100k miles, with a GM pump. Drove the car yesterday. No issues

Bob
40" from the peak of the arch or of the bottom( I.E Base)? After more research today, It looks like its do able just i have aftermarket exahust (flowmaster 3" catback) that i'll need to most likely have to cut down in order to get that fuel tank out.

yeah i have a AC Delco Fuel pump & screen waiting to be installed, sounds good!

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Originally Posted by thtanner View Post
As stated above, but basically just high enough for the rear end to drop down as much as it will allow. Once it stops, there's no point to go any higher.

If you don't run into any really stupid stuff like I did, you should be fine. I was swapping my tank and the elbow was at a different angle, wouldn't go in. That was a few days of headache/welding/etc.
Do you really have to turn the fuel tank 90* to the right in order to get that filler neck out??

Once again thanks all for your time and advice!

Last edited by Ghettobird52; 11-19-2016 at 12:04 AM.
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Old 11-19-2016, 12:19 AM   #5
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Yup remove the exhaust disconnect the shocks and the brake line bracket mounted on the drivers side and rotate the tank to drop it out. If you dont you risk cracking the tank at the filler neck. Ask he how I know. Spray all your nuts and bolts with pb blaster or wd40 the day before you start.
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Old 11-19-2016, 11:45 AM   #6
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Yup remove the exhaust disconnect the shocks and the brake line bracket mounted on the drivers side and rotate the tank to drop it out. If you dont you risk cracking the tank at the filler neck. Ask he how I know. Spray all your nuts and bolts with pb blaster or wd40 the day before you start.
Good idea to soak the bolts the night before.

Do you guys think i should pull the fuel pump relay and kick over my car a couple times to get most of the fuel out of the lines before going and breaking them loose? The pump in the tank is fine still i just want to get this TPI pump in.

Also how did you guys handle the brake lines on the rear axle? Where the able to come loose enough so that the axle can hang no problems?

Once again thanks all!
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Old 11-19-2016, 11:47 AM   #7
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Unbolt the lines from the body of the car to allow that extra movement.

You're doing what I did, over thinking it. Just get out there and do it; it's very straightforward.
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Old 11-19-2016, 10:52 PM   #8
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Unbolt the lines from the body of the car to allow that extra movement.

You're doing what I did, over thinking it. Just get out there and do it; it's very straightforward.
Lol yeah i probably am this is just how i am; methodical. With big jobs like this, i actually right my self a Tools check list and then a step by step so i dont have to pull any sources up while working. Call it over the top, i just call it being ready lol.

EDIT: lol




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Old 11-20-2016, 10:20 AM   #9
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

LOL, I feel your pain, as a retired aircraft mechanic I too over do it on my automotive wrenching. My buddies make fun of my safety wiring and thread locker, but I never have loose header bolts either.
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Old 11-20-2016, 10:22 AM   #10
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Put the rear in the air till the front bumper almost touches the ground.
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Old 11-20-2016, 07:49 PM   #11
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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LOL, I feel your pain, as a retired aircraft mechanic I too over do it on my automotive wrenching. My buddies make fun of my safety wiring and thread locker, but I never have loose header bolts either.
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Put the rear in the air till the front bumper almost touches the ground.
Wow didnt know my pictures came in sideways? any who awesome thanks all i think im going to attempt it next weekend!
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Old 12-02-2016, 08:32 PM   #12
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Originally Posted by Ghettobird52 View Post
Hey all so i really need to get this tpi pump into my tank. I want to do the job myself just not sure if i have the ability to do it in my garage. All i have is a floor jack and set of jack stands. What im curious about is how high off the ground does the a$$ of the car need to be in order to be able to have the rear end dropped, and then wiggle the tank out?

How did you do it?

Is this possible with a floor jack/stands?

Would you have paid some one to do it again?

Enlighten me with some success stories!

Thanks for your time and information!
Nobody mentioned cutting a hole behind the back seat to access the pump. Anybody tried that?
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Old 12-02-2016, 08:34 PM   #13
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Nobody mentioned cutting a hole behind the back seat to access the pump. Anybody tried that?
It's called the trap door method, and it's not that well liked generally. By the time you go through all that effort you could have done it the right way!
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Old 12-02-2016, 08:45 PM   #14
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Seems like it would be much easier and faster, but I've never done it.
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Old 12-02-2016, 10:08 PM   #15
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Its not easier nor faster as just stated. Takes just as long if not longer then the correct way.
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Old 12-03-2016, 10:05 AM   #16
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

the trap door method is highly hated on this site since it's hacking up" a car that otherwise didn't need to be messed with.

my opinion on it is that I wouldn't do it to my car but if I bought a car that the previous owner did it to and my fuel pump went, I'd sure be happy he did it.
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Old 03-17-2017, 05:36 PM   #17
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

**** i still havent done this...
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Old 03-17-2017, 06:29 PM   #18
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

I did the tank on our new car this last weekend! Fun (not), but still better than cutting up the car. Refreshed the rear suspension while we were back there.
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Old 03-17-2017, 09:04 PM   #19
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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I did the tank on our new car this last weekend! Fun (not), but still better than cutting up the car. Refreshed the rear suspension while we were back there.
truth be told thats why im trying to get myself motivated and get under there! Back in November i purchased new springs, shocks and couple other goodies but still havent done anything with them. I've had this TPI pump in my closet now for over 3 years and it hasnt moved. Its time... im serious this time lol
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Old 03-17-2017, 11:18 PM   #20
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

It's not nearly as bad as people would have you believe. If the car isnt rusty, it's all just a matter of disassembly. Drop the axle down, open the torque arm mount, and roll the axle as far forward out of the way as possible. Get the exhaust out of the way, and you should have plenty of room to wrangle the filler neck out of the frame rail.
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Old 03-18-2017, 12:19 PM   #21
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?







Will i need to remove more exhaust to get that gas tank out? Should i cut more out?
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Old 03-18-2017, 12:25 PM   #22
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

You need to remove the bit going over the axle. I can tell you from me doing this last weekend that you won't be able to skirt it by that.

If you can disconnect it at the cat, do it there and just drop it down. If not pick a place in the middle of the car that a muffler shop can have easy access to weld to, and cut it there. You can use a coupler from AutoZone to get you by in the meantime before getting it re-welded.

You don't have to "roll the axle" as described in the previous post. Not sure what that's about but I never had to do that.

After that:
> Remove Sway Arm End Links
> Remove Rear Shock Bottom Bolts
> Drop rear down a tad more
> Loosen hangers for brake lines so they don't bind
> Remove Track / Panhard Bars (2 screws go in the track bar from heat shield)
> Drop rear end as far as it will go (have the car on stands on the frame rails)
> Remove heat shields
> Disconnect fuel lines
> Support tank with something (I used a spare jack and a box to just put some upward weight on it)
> Remove Straps, drop tank out towards passenger side, leaning it so the filler neck can skirt out.

Last edited by thtanner; 03-18-2017 at 12:33 PM.
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Old 03-18-2017, 02:02 PM   #23
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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You need to remove the bit going over the axle. I can tell you from me doing this last weekend that you won't be able to skirt it by that.

If you can disconnect it at the cat, do it there and just drop it down. If not pick a place in the middle of the car that a muffler shop can have easy access to weld to, and cut it there. You can use a coupler from AutoZone to get you by in the meantime before getting it re-welded.

You don't have to "roll the axle" as described in the previous post. Not sure what that's about but I never had to do that.

After that:
> Remove Sway Arm End Links
> Remove Rear Shock Bottom Bolts
> Drop rear down a tad more
> Loosen hangers for brake lines so they don't bind
> Remove Track / Panhard Bars (2 screws go in the track bar from heat shield)
> Drop rear end as far as it will go (have the car on stands on the frame rails)
> Remove heat shields
> Disconnect fuel lines
> Support tank with something (I used a spare jack and a box to just put some upward weight on it)
> Remove Straps, drop tank out towards passenger side, leaning it so the filler neck can skirt out.
Thanks for the advice/info, i ended up cutting more out right before the rear axle, so now its empty from rear axle back. I'm actually unable to disconnect from the cat as when i had this exhaust system installed 3 years back they welded it straight on. The reason why i ask is because im actually not doing it today, only had a couple hours this morning so wanted to get that cutting out of the way. Thanks again everyone for info i really appreciate it.
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Old 03-18-2017, 02:10 PM   #24
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

With that out of the way the rest will go fast now.

I forgot to note the rear springs will come out with the axle dropping. Note orientation of spring on the rubber isolator for reinstall. Good time to swap since new Moog springs are under 50$

Let us know how it goes!
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Old 03-18-2017, 03:56 PM   #25
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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With that out of the way the rest will go fast now.

I forgot to note the rear springs will come out with the axle dropping. Note orientation of spring on the rubber isolator for reinstall. Good time to swap since new Moog springs are under 50$

Let us know how it goes!
Exactly my thinking too. With the exhaust gone i'll just drop it and pull the tank out with hopefully little 'wrestling' lol. Funny you say that because 4 months back i purchased set of eibach pro kit springs, some kyb shocks and struts and a few other goodies that will be going in soon (subframe connectors and wideband o2) So while that rear end is down im going to throw in the new parts.

Ive owned this thing for over 8 years and have never touched the suspension, cant wait to see how its going to feel!

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Old 03-18-2017, 06:01 PM   #26
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

I was back under there today on the 89 doing lower control arms, panhard bar, and a panhard bar relocation kit. It's amazing how quick stuff goes after you've done it a few times.

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Old 03-18-2017, 06:23 PM   #27
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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I was back under there today on the 89 doing lower control arms, panhard bar, and a panhard bar relocation kit. It's amazing how quick stuff goes after you've done it a few times.

Nice! What brand did you go with on those pieces and how are you liking them so far? Also what exhaust is that? 3.5"?
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Old 03-18-2017, 06:35 PM   #28
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Founders Performance on the rear goodies. I went with non-adjustable as I don't plan to lower the car, or make it an autocross machine. Just a Daily Driver that hits the canyons occasionally.

https://www.foundersperformance.com/...maro-firebird/
https://www.foundersperformance.com/...s-panhard-bar/

The exhaust is a 3", but I'll be swapping it to true dual 2 1/4s since I have room now. That will be after the intake upgrades (SuperRam upper and lower, SLP 1 3/4 headers). Debating if I should swap heads and cam at the same time...
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Old 03-18-2017, 06:56 PM   #29
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Founders Performance on the rear goodies. I went with non-adjustable as I don't plan to lower the car, or make it an autocross machine. Just a Daily Driver that hits the canyons occasionally.

https://www.foundersperformance.com/...maro-firebird/
https://www.foundersperformance.com/...s-panhard-bar/

The exhaust is a 3", but I'll be swapping it to true dual 2 1/4s since I have room now. That will be after the intake upgrades (SuperRam upper and lower, SLP 1 3/4 headers). Debating if I should swap heads and cam at the same time...
Nice looks like some good stuff! i dont know why just that pic makes the exhaust look huge.

I wish there was some canyons to drive in here in the valley. everythings flat for miles
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Old 03-18-2017, 11:01 PM   #30
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

What is this?



After pulling my muffler down and cleaning it down for a quick one i heard some rattling coming from within it. I peered inside and noticed this, i was able to pull it out.

EDIT: after more research it looks like catalytic converter honeycomb material... ****

Last edited by Ghettobird52; 03-19-2017 at 12:01 AM. Reason: more info
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Old 03-19-2017, 04:16 AM   #31
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

It is!!
Unbolt the pipe behind the cat, and see if you can knock out more, before it comes loose by itself, wandering all over the exhaust...
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Old 03-19-2017, 11:00 PM   #32
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Originally Posted by Fire"Dutch"Bird View Post
It is!!
Unbolt the pipe behind the cat, and see if you can knock out more, before it comes loose by itself, wandering all over the exhaust...
its done with... its been knocked out for years. wow
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Old Yesterday, 09:49 PM   #33
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Just did my fuel pump tonight in my 87 GTA. Wasn't as bad as I thought but I also have access to a lift. I did pull the carpet to make sure someone didn't do a trap door before I started. Glad to see it was unharmed. I do wish I would have had the extra funds to upgrade the rear suspension while I was under there. The shocks are new as are the sway bar links. After doing mine I will recommend not cutting a hole to access it, with a lift and never doing it before only took 3 hours including me rewelding the exhaust.
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Old Yesterday, 11:16 PM   #34
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Car: 88 Firebird Formula
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Originally Posted by Jbuchanan View Post
Just did my fuel pump tonight in my 87 GTA. Wasn't as bad as I thought but I also have access to a lift. I did pull the carpet to make sure someone didn't do a trap door before I started. Glad to see it was unharmed. I do wish I would have had the extra funds to upgrade the rear suspension while I was under there. The shocks are new as are the sway bar links. After doing mine I will recommend not cutting a hole to access it, with a lift and never doing it before only took 3 hours including me rewelding the exhaust.
wow ok im getting out there tomorrow morning and doing it (hand tools and floor jack). FINALLY! Wish me luck guys. Ive prepped the job to help me out, so far this is what i have done;

Cut off exhaust from rear axle back.
removed back seat and pulled carpet back
Replaced fuel filter
removed swaybar and endlinks.
soaked all other bolts with PB blaster

Hopefully it will all go smooth! I will update

EDIT: last question if any one sees this BEFORE tomorrow morning.... while doing the sway bar and fuel filter couple hours ago i was just looking at the other items to pull and whats left.

One thing i had trouble identifying was the rear brake line bolt connecting it to the frame? Everyone says to let the brake lines loose from frame so that they have more room to flex but i was having trouble figuring out what/where i would do this.

Any last minute information/advice is GREATLY appreciated.

Once again, thanks everyone for your time!

Last edited by Ghettobird52; Yesterday at 11:58 PM.
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Old Today, 06:20 AM   #35
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Driver side, close to high pressure fuel line connection. Infront of sway bar link.
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Old Today, 08:38 AM   #36
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

"removed back seat and pulled carpet back".....Why?
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Old Today, 08:50 AM   #37
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

Hey Bob88GTA, are you going to the AR show in April at Summit Racing? I noticed you are in Huntsville.
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Old Today, 08:58 AM   #38
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Re: Fuel Pump Replacement; How high does the rear of car need to be in the air?

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Hey Bob88GTA, are you going to the AR show in April at Summit Racing? I noticed you are in Huntsville.
PM'd
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