TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

little prob.

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Old 03-31-2006, 12:18 AM
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Car: 1990 350 tbi l98,
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little prob.

how every one, today i went out and was changing my fuel pump and am kinda mad. I removed the diff, and the tank, i discovered that some one had already changed the fuel pump. The lazy way, what a let downer. My question on this problem, has this ever happened to you guys? What, and how did you guys fixit with?
Old 03-31-2006, 07:11 PM
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Car: 1992 RS
Engine: Carbed 350
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Axle/Gears: 3.42 posi
Not sure what you mean by "changed the lazy way" - more info needed. Not sure what needs fixed.
Old 03-31-2006, 07:15 PM
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Car: 1990 Camaro RS
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You mean they cut a hole in the rear of the car? If so , while you still have the tank out, weld it back together. You wouldn't want to think about welding with the tank around. So with the tank being out, it is perfect time to do that.
Old 04-01-2006, 02:31 AM
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Car: 1990 350 tbi l98,
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they actually cut the whole thing out. the piece of metal that sopose to be there isnt there.
Old 04-01-2006, 03:20 AM
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Car: 1992 Trans/am convertible
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Well, Its a blesing in disguise.
What am saying here is that if the lines are already cut and fit with proper fittings, changing a fuel pump will be much easier for you.
You might not like it, but its just easier.

I changed the pump the right way, and if I did not cut out my exhaust the change would be 100times worse.
Its a pita to do it and I am really gonna do that door next time I go change a pump for my 350.
Old 04-01-2006, 11:31 AM
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Car: 1990 350 tbi l98,
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Originally Posted by xlwhellraiser
Well, Its a blesing in disguise.
What am saying here is that if the lines are already cut and fit with proper fittings, changing a fuel pump will be much easier for you.
You might not like it, but its just easier.

I changed the pump the right way, and if I did not cut out my exhaust the change would be 100times worse.
Its a pita to do it and I am really gonna do that door next time I go change a pump for my 350.
I get you but it sucks that i have that back there, but yea it is alot easer to play with the fuel pump.
what do you guys think about a little stainless steel door that i can weld on.
Old 04-01-2006, 11:59 AM
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Car: 1990 Camaro RS
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Originally Posted by 90tbi305
I get you but it sucks that i have that back there, but yea it is alot easer to play with the fuel pump.
what do you guys think about a little stainless steel door that i can weld on.
Many on here will condemn you for doing that.

However, I changed my fuel pump once and if I had to do it again I would DEFINITELY make some sort of door.
Old 04-02-2006, 09:22 PM
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I've heard of that before. Genious if you ask me, but then again I can get kind of lazy sometimes. Does it make the car any weaker in that area? Some cars actually come with a little trap door for that purpose.
Old 04-03-2006, 03:26 AM
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Car: 1992 Trans/am convertible
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 2.73 drum WS6
I'd rather weld a cage in my car (no welding experience) than change the pump again.

I mean, if you are a masochist that go right ahead.
I could not even wrestle the tank out. I had to do it with the Tank hangning to the side.
The stupid filler neck would not budge.

Oh, it so happened that I had more than half a tank...
At least I got buffer from that.
Old 04-03-2006, 10:02 AM
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Weld up the door as Dewey mentioned. If you take out the filler neck door and plastic pocket the whole tank will drop out. On my first attempt I replaced my fuel pump in 2 hours. It was easy and I still don't know why people complain so much. I used jack stands, simple hand tools, and patience. The only hinderance I can see is if you have trouble removing rusted bolts and or getting the stock exhaust out of the way.
Old 04-03-2006, 12:41 PM
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Car: 1990 Camaro RS
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Originally Posted by ShiftyCapone
The only hinderance I can see is if you have trouble removing rusted bolts and or getting the stock exhaust out of the way.
And I had exactly both of those problems + the fact that I had 3/4 of a tank + the fact that even when I tore apart the plastic pieces and stuff on the filler door it still wouldn't come out + the fact that now that I think about it, I replaced my pump with a cheap autozone replacement, I should have put a TPI pump in while I had the damn thing out .
Old 04-03-2006, 07:02 PM
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Originally Posted by ShiftyCapone
Weld up the door as Dewey mentioned. If you take out the filler neck door and plastic pocket the whole tank will drop out. On my first attempt I replaced my fuel pump in 2 hours. It was easy and I still don't know why people complain so much.
I know, yall are just giving each other a bad name doing things half-*** like that.
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