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Discussion Starter #1
Hi, I did a search here and came up empty handed. :(
Does anyone know if there is an access plate in the trunk, or under the back seat for changing out, or servicing the fuel pump?
Thanks in advance. :)
-Bruce
 

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Super Moderator
1997 Thunderbird 4.6, 1998 Mark VIII LSC
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No, you'll have to drop the tank to get at it.
 

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If you absolutely have to cause there's no other way..Here's the location of the sending unit..
Another member did this to their Thunderbird..


Photo courtesy of BlackBirdSport..
 

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With all that wet fuel sitting there, me thinks he was lucky that he didn't cause sparks?
 

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PostSlut
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I did that....sorta.......but what I did was for a purpose.....where the hump is, I took it out....I don't need no stinkin hump! :tongue:

 

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I wouldn't even do that to a car I hated, what an idiot.
Why? who is going to see it? I wouldnt do THAT kind of a hack job on it mind you.... But, if you do it right, it makes swapping a fuel pump a 30 minute job. I did this to an old '91 5.0L Cougar I had. the car was rough so I didnt care. But when I was done butt welding it back in and grinding the welds down, the door was invisible.

When I change the fuel pump in the Bird I will be doing something similar, only I will be cutting that section out (only slightly bigger), of a parts car and make a removable trap door.
 

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1994 Cougar XR7 DOHC/5-Speed
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Other than the draft, noise and fumes permanently emanating from the rear seat area every time I drive? I guess the idea of being a hack to save a whopping 20 to 30 minutes of precious time doesn't sit well with me either.

Maybe I'm just picky but If I know there's a big hole chewed up somewhere in my car it would bug me, weather its the result of corrosion or tin snips.
 

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Yeah call me crazy but I'm not a fan of cutting into the sub frame of the car right by the gas tank especially. I assume you made your cuts with a grinder and cut off wheel... that means sparks right next to the gas tank. This also means that in order to maintain the structural integrity of the car, you must weld that piece back in. Which means more hot works by the fuel source of your car. Moral of the story is "just drop the friggin gas tank!"
 

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Why? who is going to see it? I wouldnt do THAT kind of a hack job on it mind you.... But, if you do it right, it makes swapping a fuel pump a 30 minute job. I did this to an old '91 5.0L Cougar I had. the car was rough so I didnt care. But when I was done butt welding it back in and grinding the welds down, the door was invisible.

When I change the fuel pump in the Bird I will be doing something similar, only I will be cutting that section out (only slightly bigger), of a parts car and make a removable trap door.
WHY in the world would you WELD over the top of the PLASTIC gas tank ?!?!?
 

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PostSlut
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Yeah call me crazy but I'm not a fan of cutting into the sub frame of the car right by the gas tank especially. I assume you made your cuts with a grinder and cut off wheel... that means sparks right next to the gas tank. This also means that in order to maintain the structural integrity of the car, you must weld that piece back in. Which means more hot works by the fuel source of your car. Moral of the story is "just drop the friggin gas tank!"
no structual intergrity will be lost in the car by cutting out that little bit.

These are unibody cars, and that cut is no where near the subframe....

here are a few pics that i have hosted that show the area in question...

top side, original hump..



underneath, you can see where the subframe stops...the area under there is where the tank sits.....








with that said, i agree that it would not be safe to have any kind of heat or sparks in that area, but as far as stucual goes, you should be fine.
 

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IMHO, the engineers at Ford clearly designed the car to not have an access point right there. There is probably a reason why. Whether it will make it worse or not I honestly am not sure, but why take that risk?
 

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Discussion Starter #17
Well, I suppose another option would be to just eliminate the fuel tank altogether and mount a fuel cell in the trunk? :cool: ;)
Seriously though, anybody know what the fuel tank capacity is for this car? I ran the tank as empty as I dared so I could drop it to have a look, but with the holidays so close I just said the heck with it for now and filled it back up. It took 15 and a half gallons to fill it to the top, so I'm thinking maybe 16 gallons?
-Bruce
 

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Thanks, I guess I still had a ways to go then. :)
-Bruce
IF and ONLY IF you could possible suck every drop of gas out of your gas tank. Drive it emply and let us know...

I have driven a couple different cars out of gas completely (not on purpose lol) and I am usually able to put MORE than the capacity (I'm guessing because of the filler neck and such).
 
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