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Unread 01-10-2013, 04:25 PM   #31
TrenchMaker
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2002 WJ 
 
Join Date: Oct 2012
Location: Sudbury, Ontario
Posts: 231
Found it fixed it check engine light off. Now I am at 18.8L/100KM. Still have the long crank after the fuel pressure drops after 20min, so that leads me to the fuel module o ring needing replacement. Where do I find the O ring part number or the updated part number and how do I proceed.

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Unread 01-10-2013, 05:25 PM   #32
shockracer
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Join Date: Oct 2010
Location: Northern, Colorado
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Quote:
Originally Posted by TrenchMaker View Post
Found it fixed it check engine light off. Now I am at 18.8L/100KM. Still have the long crank after the fuel pressure drops after 20min, so that leads me to the fuel module o ring needing replacement. Where do I find the O ring part number or the updated part number and how do I proceed.
I bought my kit from the dealer, was under $40 it comes with some instructions too. I'll look up the part #

Found it, 05019308AA. Now this was issued for 99-01 I'm not sure if people have used on later years and it worked or not.
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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 01-10-2013, 07:42 PM   #33
TrenchMaker
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Perfect I am going to try that next. I checked the door sticker and it was made in Jan-Feb 02 I wonder if the defect carried over for a few months. Also what mileage do you get? Thank you for your time.
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Unread 01-10-2013, 07:49 PM   #34
shockracer
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Join Date: Oct 2010
Location: Northern, Colorado
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Originally Posted by TrenchMaker View Post
Perfect I am going to try that next. I checked the door sticker and it was made in Jan-Feb 02 I wonder if the defect carried over for a few months. Also what mileage do you get? Thank you for your time.
On the last full highway trip with my current setup and over 2000 miles I got 21.32mpg, mind that I turn off OD coming up on hills and don't fully hold the speed limit on the way up them, these and others helped me achieve that MPG.
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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 01-18-2013, 08:45 PM   #35
TrenchMaker
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Ok so this weekend I am replacing both front fenders, fuel pump & module o-ring, Dynomax Exhaust, all 4 o2 sensors, power steeing pump, and thermostat. That should do it. At the current time and temperature it is 38 below celcius with the wind so I have had to let it idle a lot. Right now the overhead says it is burning 26-30 l/100km......that must change.
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Unread 03-26-2013, 03:59 AM   #36
outofrng623
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Poking around, having some major mileage problems...Any updates on this? Thanks

My ongoing mileage thread...
http://www.jeepforum.com/forum/f310/...-help-1490914/
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Unread 03-26-2013, 08:20 PM   #37
TrenchMaker
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I got it! Dead 02 sensors. Once I changed those and diconnected the battery after a week it went from 18.8 to 10 hwy in 2wd and 12hwy in 4 full time. In town I got it down to 15 flat. I also changed out my ruptured exhaust for a dynomax that helped too as lack of proper back pressure can lead to mileage decrese. Have you monitored your O2s on a scan tool yet?
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Unread 03-27-2013, 03:15 AM   #38
outofrng623
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Tried lots of things and have monitored the o2s. What o2s did you put in? All 4? Densos and if so were they mopar densos or just densos that fit and have a different part number? Apparently there is a difference.

When I look at the mode 6 data for the o2s they do not pass the jeeps monitors. The two pre cat o2s fail the half cycle. But what's weird is they are new densos and I'm pretty much getting the same readings off of them as I did the old ones I had pulled out. Passing number is a 64. Ill get 32 in one and 12 in the other. One day it will be 64 in one and 14 in the other. It makes no sense at all. If they're different specs fine, but I would imagine they would read more consistent everyday. So something is awry there and who knows where else. Lol
Heres a link to the thread I have going...There is a lot of information and some vids, o2 monitors, fuel trims, etc.

http://www.jeepforum.com/forum/f310/...-help-1490914/

Last edited by outofrng623; 03-27-2013 at 03:41 AM.. Reason: typos
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Unread 04-14-2013, 08:45 PM   #39
TrenchMaker
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I went with the Mopar part numbers converted to NTK from a local supplier. NTK makes them for Jeep. They worked well. But now I have bad mileage again.
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Unread 05-10-2013, 07:33 PM   #40
TrenchMaker
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Ok got it! After logging the short term and long term fuel trim and consulting an expert it comes down to bad/going bad/plugged catalytic converters. So this Thursday I am cutting them out and will go from there. Current average is 11 and getting worse every time I drive it.
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Unread 05-10-2013, 07:39 PM   #41
outofrng623
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Can you tell me how you/they came to that conclusion? Curious. Is there any way for them to test them?
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Unread 05-12-2013, 04:15 PM   #42
TrenchMaker
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WE plugged in the Genesis scan tool at work. Performing a drive test revealed that the car is running rich. This then displays as the car running lean to correct the issue. Also when standing on the gas it shows the rich issues getting worse exponentially. So after giving the exact values to our friends at AutoAide.com he informed me that it is the engine vacuum getting worse the more the throttle is open/rpm increases. Result: =engine is exhaling through a straw. The strange this is I used to be an apprentice mechanic a few years back and diagnosed a few plugged cats. Now when they plugged up on the customer it was so bad that they had a terrible smell of rotten eggs and they car lost power to the point of only getting 60km top speed. With the WJ now it is weird. Turns out the little cats up from slowly disintegrate and drop little pieces down into the big one and plug it up bit by bit. So I got the bad smell sometimes, lack of power sometimes but Poop For Mileage all the time. Strange eh? So it goes in this Thursday for the fix and I will report back. At the moment I am at 11 mpg highway and city and the truck will not stay in overdrive due to lack of power. We are cutting out the little cats and replacing the big one with a magnaflow high output. I was going to go for the full repair but it was quoted at 1400 or higher. The cut and gut procedure is a nice price tag of $350.00. So I will let you know what I get in the end. Cheers.
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Unread 05-12-2013, 06:19 PM   #43
outofrng623
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Sh*t, very good to know. Does sound like my issue. I wasn't sure what needed to be done in order to change out the cats...if the smells could be eliminated etc. please keep me/us posted. I will more than likely do the same if you come out right in the end. Also, let me know where you are getting the exhaust cat etc. thanks
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Unread 05-24-2013, 04:11 AM   #44
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Any updates on this? Thanks appreciated.
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Unread 05-25-2013, 10:35 PM   #45
TrenchMaker
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Oh right I forgot to post. The shop recommended to me by business associates and the like was off with a work related injury. He is back and we booked the truck for this Wednesday. One update I can give you is the weird swamp water/raw fuel smell is coming back and getting stronger on cold start ups. Also the mileage has started to deteriorate even worse.
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