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Unread 05-12-2011, 09:59 AM   #1
docster
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2002 WJ 
 
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Location: Grand Rapids, MI
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fuel pump...

since i have no service manual. how the heck do you get the fuel pump out. anyone have a write up? im going to replace the o-ring because my starts are super long its not holding fuel pressure when car is off, running its perfect. i dont want to break anything on the pump and am unfamiliar with these on the jeep. on the audi, if you even slightly bump the level, you can forget about it ever working again!

thanks in advance.

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2002 WJ Ltd. QD, 4.7L. , Superchips, Magnaflow 12256 muffler and custom 3 inch piping, 2" IRO springs, Procomp 9000 Shocks, JK Moabs, 265/65/17 tires, Moog SS.
Diff fluid change DIY, http://www.jeepforum.com/forum/f310/official-diff-fluid-change-diy-1534883/
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Unread 05-12-2011, 10:36 AM   #2
smunns
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Disconnect the plug to the sending unit, disconnect the two fuel lines going to it, unscrew the plastic ring holding it in (I used a large flat head screw drive and a hammer), carefully pull it out.

To get to the o-ring... CAREFULLY slide a small flat head screw driver up the inside of each one of the plastic tabs that hold the top on. It takes a little finesse, but when you get the screw driver in the right position the tabs will unlock. You then have to hold that side of the cap up to make sure it doesn't go back down and lock in place again. After you have them all unlocked, just slide the top straight off.

It's a lot easier than it sounds.
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Unread 05-12-2011, 11:12 AM   #3
docster
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outstanding. thank you!
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2002 WJ Ltd. QD, 4.7L. , Superchips, Magnaflow 12256 muffler and custom 3 inch piping, 2" IRO springs, Procomp 9000 Shocks, JK Moabs, 265/65/17 tires, Moog SS.
Diff fluid change DIY, http://www.jeepforum.com/forum/f310/official-diff-fluid-change-diy-1534883/
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Unread 05-12-2011, 11:16 AM   #4
RedlegWJ
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Try changing the filter first and see if it improves.
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Unread 05-12-2011, 04:57 PM   #5
iluvtruenos
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x2 on the filter.

On these it's a filter and regulator. I had the same problem with pressure bleeding off, and it turned out to be my filter.

Replace it first, since you have to do it anyway to retain a warranty on most pumps.
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Unread 05-12-2011, 07:03 PM   #6
docster
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ok...i will try throwing a wix in there. but the reason i was leaning towards pump is because is smooth when running and no leaking what so ever. plus i am getting 17-20 mpg combined easy. and there is a TSB on the o-ring also...for earlier years. still think it could be a wix? the fuel filter i could see if my MPG was down adn it ran rough, but once it starts, its perfect. Was also thinking Crank or camshaft position sensor, but it runs too smooth for that i think. i dont know. just need to it to start easily and keep running well since wife is preggo!
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2002 WJ Ltd. QD, 4.7L. , Superchips, Magnaflow 12256 muffler and custom 3 inch piping, 2" IRO springs, Procomp 9000 Shocks, JK Moabs, 265/65/17 tires, Moog SS.
Diff fluid change DIY, http://www.jeepforum.com/forum/f310/official-diff-fluid-change-diy-1534883/
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Unread 05-12-2011, 07:07 PM   #7
smunns
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It was the o-ring on mine two weeks ago. I have a new filter and pump. A .69 cent o-ring fixed it. If it was me, I'd do the o-ring first since it's a hell of a lot cheaper.
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Unread 05-12-2011, 09:10 PM   #8
docster
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thats what im going to try i think. what teh quickest way to get to the fuel pump, havent even looked for it yet haha. been too damn busy.
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2002 WJ Ltd. QD, 4.7L. , Superchips, Magnaflow 12256 muffler and custom 3 inch piping, 2" IRO springs, Procomp 9000 Shocks, JK Moabs, 265/65/17 tires, Moog SS.
Diff fluid change DIY, http://www.jeepforum.com/forum/f310/official-diff-fluid-change-diy-1534883/
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Unread 05-12-2011, 09:57 PM   #9
volvite
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You will have to drop the tank to find the fuel pump.
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Unread 09-28-2013, 02:16 PM   #10
Greyrock
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Quote:
Originally Posted by smunns View Post
It was the o-ring on mine two weeks ago. I have a new filter and pump. A .69 cent o-ring fixed it. If it was me, I'd do the o-ring first since it's a hell of a lot cheaper.
Where did you get the o-ring that cheap? The right one? certainly not the stealership..
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