Add 5 gallons to your YJ's gas tank in less than 1/2 hour?? - Page 2 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Add 5 gallons to your YJ's gas tank in less than 1/2 hour??

Jeep Grand Cherokee Mirror - Side ViewJeep Grand Cherokee Headlight AssembliesThe Retrofit Source / JW Speaker LED Headlight GROUP BUY!

Reply
Unread 02-04-2008, 06:45 PM   #16
sebastian22
Registered User
1995 YJ Wrangler 
 
Join Date: Dec 2007
Location: Orange, CA
Posts: 2,033
all YJs from 91-95 have a 20 gallon tank. the factory decided to make them all 20 gallon tanks, but they put a hose inside to trick the tank into thinking it was full at 15 gallons. as a result they were able to charge more money for the "upgraded" 20 gallon tank, but save the time and money of having to actually make 2 different tanks.

__________________
95 Black YJ
sebastian22 is offline   Reply With Quote
Unread 02-04-2008, 07:02 PM   #17
jeepercreeper77
Registered User
1990 YJ Wrangler 
 
Join Date: Oct 2006
Location: hamptons,L.I.-ny
Posts: 477
so the 90 has a 20gal tank or no? if not does someone make a replacement tank that fits in the stock spot that would be 20gal.
__________________
90 wrangler,4.2l,1" MML,CRT HEI Dist.,34/34(interco) weber, hurst shftr,5spd,5" BDS lft,f-d30/r-8.8,5/8 lft booms,1" bl,tflex belly up,JB convs. SYE,gdyr mtr35s,hurc'ed,smit src frt bump,gen-r rear bump w/tire carrier,f&r tube fenders,psc knokrs,r gen-rgt ful conr gurds,duel bat.,BIC,m8000
jeepercreeper77 is offline   Reply With Quote
Unread 02-04-2008, 07:36 PM   #18
Jeeples
Registered User
2000 WJ 
 
Join Date: Jul 2006
Location: forum/f310/, UT
Posts: 4,385
There were two tanks made for Pre-'91 YJ's:

A 14 Gallon steel tank and a 19 gallon plastic tank (however it may also be steel, but I recall the 19 gallon tanks being plastic).
__________________
His: '00 WJ 4.7 Limited- stock

Hers: '03 WJ 4.7 V8- IRO 3", 245/75/16 Duratracs
Jeeples is offline   Reply With Quote
Unread 02-05-2008, 07:17 AM   #19
Alacran
Registered User
1994 YJ Wrangler 
 
Join Date: May 2007
Location: Buena Vista, Jalisco Mx
Posts: 403
Just did this adjustment on my 94. You'll notice that unless you change the fuel tank sender the fuel gauge reads full for alot longer. I've got 106 miles on my new tank and it still reads full.
Alacran is offline   Reply With Quote
Unread 02-05-2008, 09:28 AM   #20
romanella
Registered User
2008 JK Wrangler 
 
Join Date: May 2007
Location: Northern, CO
Posts: 56
How difficult is it to do this? The instructions posted are good, but I'm sure I'll get hung up somewhere... Not really sure what I'm looking at.
romanella is offline   Reply With Quote
Unread 02-05-2008, 09:30 AM   #21
jeepnphreak
Registered User
1989 XJ Cherokee 
 
Join Date: Apr 2006
Location: montana
Posts: 1,351
Quote:
Originally Posted by Alacran View Post
You'll notice that unless you change the fuel tank sender the fuel gauge reads full for alot longer.

How do you go about changing the fuel tank sender?
__________________
1989 XJ, 5spd, np231 with bjconversion SYE , re3.5, 33x12.5r15 BFgoodrich ATS, D30 F, Dana 44 from 87 with 4.56s, Custom front bumper.

94 yj: stock everything and 4 angry squarrels under the hood.
jeepnphreak is offline   Reply With Quote
Unread 02-05-2008, 09:40 AM   #22
jeepnphreak
Registered User
1989 XJ Cherokee 
 
Join Date: Apr 2006
Location: montana
Posts: 1,351
Quote:
Originally Posted by jeepnphreak View Post
How do you go about changing the fuel tank sender?
Never mind I found out how. About $200 at the auto store.
__________________
1989 XJ, 5spd, np231 with bjconversion SYE , re3.5, 33x12.5r15 BFgoodrich ATS, D30 F, Dana 44 from 87 with 4.56s, Custom front bumper.

94 yj: stock everything and 4 angry squarrels under the hood.
jeepnphreak is offline   Reply With Quote
Unread 02-05-2008, 09:47 AM   #23
rugbynut
Registered User
1994 YJ Wrangler 
 
Join Date: Dec 2007
Location: St. Louis-Metro East, IL
Posts: 84
Quote:
Originally Posted by Alacran View Post
Just did this adjustment on my 94. You'll notice that unless you change the fuel tank sender the fuel gauge reads full for alot longer. I've got 106 miles on my new tank and it still reads full.
So have you ever gotten your build sheet from Jeep. If so, did it say that you had the 20 gallon tank or not?

My build sheet says that I do, but in 11+ years of owning it I have never been able to get it to take more than 14-14 1/2 gallons at any one fill up. Admittedly, I have never run it completely out of gas, but right after I got my build sheet I was extremely curious and ran my gauge down as far as it has ever been. When I finally filled it, it only took 14.74 gallons topped off completely.

My question is, does the build sheet on those years always say 20 gallon tank, since technically it is?
rugbynut is offline   Reply With Quote
Unread 02-05-2008, 09:57 AM   #24
rustywrangler
Got my eye on you.....
 
rustywrangler's Avatar
 
Join Date: Apr 2005
Location: Syracuse, NY
Posts: 18,616
Quote:
Originally Posted by Jeeples View Post
There were two tanks made for Pre-'91 YJ's:

A 14 Gallon steel tank and a 19 gallon plastic tank (however it may also be steel, but I recall the 19 gallon tanks being plastic).
15.5 Gallon steel, 20.1 Gallon plastic or steel depending on what model.

__________________

Congenital Heart Disease is a reality for me, BOTH of my children have it. Please read up and become aware for future generations

Lydia Ann-Acquired 08/05/05 Open Heart surgery 08/10/05
Jacob Patrick-Acquired 01/17/08 Open Heart surgery 02/15/08
rustywrangler is offline   Reply With Quote
Unread 02-05-2008, 10:50 AM   #25
sebastian22
Registered User
1995 YJ Wrangler 
 
Join Date: Dec 2007
Location: Orange, CA
Posts: 2,033
Quote:
Originally Posted by romanella View Post
How difficult is it to do this? The instructions posted are good, but I'm sure I'll get hung up somewhere... Not really sure what I'm looking at.
its not very difficult at all. follow the directions posted on the links above. i believe one is 4x4wire... and the other is jedi. theyre very detailed but heres the basics (at least what i did).

1. locate the gas tank fill vent hose. (on driver side, rear most hose connected to the tank.

2. if you got small hands and the right tools you can skip removing the gas tank and go on to loosen the hose clamp and disconnect the hose where it connects to the gas tank.

3. once you remove the hose you will see a neck on the tank where the hose connected, and inside you will see another hose.

4. use a flat screwdriver and some pliers to completely remove that hose. (this will take some work as the hose is really tight)

5. either cut the hose to 3" and re-insert it, or just toss the whole thing in the trash.

6. reconnect the fill vent hose and tighten the hose clamp.

7. go to the gas station and fill up your tank.

the only reason to lower your tank is to gain better access to the hose clamp. im too lazy to do that so i used a socket with a long extension, a swivel adapter, and a socket that fits on the hose clamp. either way you decide to do it, good luck and have fun.

(edit: i can post some pictures later when i get home)
__________________
95 Black YJ
sebastian22 is offline   Reply With Quote
Unread 02-05-2008, 11:58 AM   #26
93YJfalcon
Registered User
1993 YJ Wrangler 
 
Join Date: Apr 2005
Location: near St. Louis, mo.
Posts: 1,565
Quote:
Originally Posted by 70sElvis View Post
My suggestion is for everyone to check how much they currently hold before doing this mode. I was new to the jeep community and found this mode. I tore into the mode only to find out that one of the POs had already made it. Just a suggestion.
Me too.
__________________
ROCK OVER LONDON... ROCK ON CHICAGO!

http://dirtyfabworks.com/gallery.htm
93YJfalcon is offline   Reply With Quote
Unread 02-05-2008, 03:54 PM   #27
DownNDirty
Registered User
1995 YJ Wrangler 
 
Join Date: Dec 2007
Location: Ottawa
Posts: 69
I did not lower the tank I just used tin snips to cut the old clamp off as I did not have a socket to reach it.
For me the worst part was pulling out the inner hose.
I am at 80 miles and still shows full.Yeah
DownNDirty is offline   Reply With Quote
Unread 02-06-2008, 01:58 AM   #28
jeepsurf
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2007
Location: In the night
Posts: 372
I asked JeepEngineers this:

Quote:
Originally Posted by jeepsurf:

Have you guys heard about the modification to the 2nd gen 92-95 YJ's 15 gal gas tank where by cutting the vent tube are able to acheive 20 gal capacity?I have a 1990 yj and I think its an actual 15 gal tank, so I cant preform this mod. If this is so, will a 92 - 95 factory tank fit in my 1990?


JeepEngineers: YJ ?/ that was TJ I think. Never heard of this for a YJ ??

http://www.jeepforum.com/forum/showt...=513743&page=5

Whats the deal? Can I get a 15g (aka 20g) stock 2ng gen tank and put it on my 1990?
__________________
jeepsurf endorses this post. Most of the time
Admin, nightcrew.org

1990 2.5 YJ / 1997 2.5 TJ

USAF VET

My YJ build thread HERE.
Nightcrew alive and well, now on VB 4.0 HERE.
Food mailed 3ooo milesHERE.
jeepsurf is offline   Reply With Quote
Unread 02-06-2008, 03:00 AM   #29
mdo817
Registered User
1992 YJ Wrangler 
 
Join Date: Mar 2007
Location: georgia
Posts: 145
My '90 model had a 20 Gallon/Plastic, it's identical to the plastic tank in my '92. I took it out and swapped it into my '92 because I knew it was clean. The sending unit seal is the same all the way back into the CJ's as far as size and bolt pattern.
__________________
1992 YJ, Project In Work,Frame Off Done, Repainted, Herculined Interior, Back on the road.Self Fab'd front/rear bumpers & tire carrie,MM SE9500,lot's of Susp. 1" BDL,BrandonYJ Boomerangs, 33X10.5 BFG M/T, 4.0 AX-15,8.8 LSD,4.10 Gears, ARB Up Front,P/S Rocker Knockers with slider. 90 YJ now turned into a parts Jeep.
2006 WK 4X4, Wifes Ride (Grandkid hauler)
1995 YJ,4.0, AX-15, Bone Stock Wifes Toy
mdo817 is offline   Reply With Quote
Unread 02-06-2008, 10:22 AM   #30
Jeepinjon
Registered User
1995 YJ Wrangler 
 
Join Date: Oct 2005
Location: Bellwood, Pa
Posts: 315
Quote:
Originally Posted by swedishdwarf View Post
I don't know about the build sheet, but YJ gas gauges are notoriously inaccurate.
Yup, my gauge will read 'Full' while I'm making the hike to the gas station toting the jerry can. My Jeep's got a hell of a sense of humor like that.
__________________
Originally Posted by mean90yj
follow my logic on this one:
the people who say that drive tj's, tj's have round headlights...boobs are round....people who drive tj's are boobs.
Jeepinjon is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.