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Unread 12-22-2012, 03:08 PM   #1
TrenchMaker
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2002 WJ 
 
Join Date: Oct 2012
Location: Sudbury, Ontario
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Wj New Member with Fuel Issue

Hello all!

I recently started having problems with my 01 Laredo. I purchased it back in October and on the first run from Toronto to Sudbury I got around 600km on that tank. Back at home inner city driving I got around 400km. Then after scanning a check engine light I found the leak detection pump had a bad leak. Replaced that and cleared the code. While I had the code and a bad pump my mileage dropped to 300km per tank. Now after the repair (new plugs installed used NGK), the mileage has dropped to 220km. This morning when I went to fill up it would not take fuel. I have previously run seafoam a month ago and I tried 4 ounces of two stroke oil on the previous fill up as I was going to try that treatment as a preventative measure to poor quality winter fuel. Also on the first startup of the day it cranks like mad before catching and starting. Only does this twice a day. Once in the morning and once after work (8 hours not running). Anyone else have this issue? It is an 01 V8 low output, selec-trac, 185,000km. I hope someone may have an idea to all this. Thanks in advance for any help you fine folks can provide...oh yeah Seasons Greetings to all of you.

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Unread 12-22-2012, 03:31 PM   #2
shockracer
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Change your fuel filter/regulator.
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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Unread 12-22-2012, 06:29 PM   #3
TrenchMaker
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You had the same problem?
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Unread 12-22-2012, 07:08 PM   #4
shockracer
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Quote:
Originally Posted by TrenchMaker View Post
You had the same problem?
Yes, with the long starts and bad fuel mileage. It was the second step I had taken to fix the problem, was the second cheapest fix at $32.
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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Unread 12-23-2012, 06:22 AM   #5
TrenchMaker
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What was the first step you took?
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Unread 12-23-2012, 06:33 AM   #6
shockracer
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Quote:
Originally Posted by TrenchMaker View Post
What was the first step you took?
The fuel module O-ring was $21 from dealer but had taken 3 hours to do. Its listed under a TSB.
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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Unread 12-23-2012, 08:39 AM   #7
TrenchMaker
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Is there a full write up for that? Also can this repair be done at home?
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Unread 12-23-2012, 09:48 AM   #8
shockracer
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Quote:
Originally Posted by TrenchMaker View Post
Is there a full write up for that? Also can this repair be done at home?
The kit comes with a how to. FYI the the tow hitch, skid plate, and gas tank has to come out to change the O-ring, I had 3/4 tank of gas, not to fun with that much. Taking off the rear bumper cover is highly recommend.

The fuel filter had taken me 8 mins to change out. I'd start there if I did it over again.

As far as if it can be done at home is up to you. Do you have a repair manuel, tools, and knowledge of working on vehicles?
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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Unread 12-23-2012, 12:00 PM   #9
TrenchMaker
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Good thing I have $16 bucks in gas left in there. I invested in the repair book a month back and I still have my tools left over from my time as an automotive apprentice. I did not know if a trans jack would be needed or if it is a GIANT mess to work on. I got into sales about 6 years back so I found my skills get a little lack luster. Wanted to make sure I would not be getting into something I could not handle. As for where to obtain the o-ring kit is it best to go dealership? Or is there a good aftermarket that will work too? Also if the fuel pump has been forcing fuel this hard through a plugged filter for this long, is it better to change the pump as well? If I did does the aftermarket pump come with an updated o-ring or is that a seperate repair to be done at the same time? I figured if the tank is down have at it! Thanks again for the help on this I greatly appreciate it.
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Unread 12-23-2012, 01:14 PM   #10
shockracer
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It's what we do here at JFs.

http://www.wjjeeps.com/tsb.htm

This website is the WJ bible. Just about any info you'll ever need about your WJ.

I would rent a fuel pressure gauge kit to test what your pressure is at the fuel rail when the engine is running then how long the pressure stays when you turn off the engine or just change the fuel filter.

How many miles are on your WJ?
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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Unread 12-23-2012, 03:06 PM   #11
TrenchMaker
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I am at 185,000km. In miles 114953. I was thinking of performing a pressure drop test at the fuel rail. The info I found so far had hinted at that. Strange the TSB won't load on the site, internet stops working as soon as I click...weird.
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Unread 12-23-2012, 03:27 PM   #12
rm2001wj
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In your initial post, you said,
Quote:
This morning when I went to fill up it would not take fuel.
To me that sounds like you could not put any gas into the tank. It's like the tank was full. Is that what you meant? If not, what did you mean?
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Unread 12-23-2012, 05:47 PM   #13
shockracer
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Quote:
Originally Posted by TrenchMaker View Post
I am at 185,000km. In miles 114953. I was thinking of performing a pressure drop test at the fuel rail. The info I found so far had hinted at that. Strange the TSB won't load on the site, internet stops working as soon as I click...weird.
They are a PDF format, you may need to install Adobe acrobat reader.
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2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

Colorado Jeep Club Member #262
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Unread 12-24-2012, 11:04 PM   #14
TrenchMaker
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Yes vehicle refused to take fuel. Kept kicking the pump back like it was full. Fuel would bubble up to the top of the fill neck then burp and bubble back down into the tank. I have adobe site still crashes everytime.
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Unread 12-25-2012, 02:24 AM   #15
shockracer
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Quote:
Originally Posted by TrenchMaker View Post
Yes vehicle refused to take fuel. Kept kicking the pump back like it was full. Fuel would bubble up to the top of the fill neck then burp and bubble back down into the tank. I have adobe site still crashes everytime.
So is the tank filling up or are you unable to fill it up?
__________________
2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers

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