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post #1 of 7 Old 09-05-2011, 10:10 AM Thread Starter
jeep4life1
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Join Date: Dec 2008
Location: Pittsfield
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Running Problem

I have a 92 YJ 2.5 5 speed. Ran great before I went wheeling. Now it starts to run like crap afterwards. I changed the plugs out, changed the oil, cleane the butterfly on the throttlebody, checked the fuses. Nothing works. Possible fuel pump? And help it great.

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post #2 of 7 Old 09-05-2011, 10:57 AM
cstone94
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1995 YJ Wrangler 
 
Join Date: May 2011
Location: Martinsville
Posts: 726
What do you mean by it running like crap?

95' YJ - Warn Bumpers/Tire Carrier/Winch - 2.5L - 6" Skyjacker Suspension Lift - 4.10's - Locrite Locker - Dana 35/30 - 35" BFGoodrich KM2's

11' F250 - DD

1982 Toyota Pick-Up - Spray-On Yellow Rhino Lined - Chevrolet 305 H.O. - SM465 - NP208C - All-Pro Off Road 5" Springs - 35x15.50x15 Super Swampers
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post #3 of 7 Old 09-05-2011, 12:59 PM
Mark05059
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1989 YJ Wrangler 
 
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Location: quechee Vermont
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see if you ripped the o2 sensor wires out of the exhaust

1998 ZJ 5.2 Auto

1989 Wrangler Black Bone Stock 2.5l 5spd
/l , [____],
|---L--[]lllllll[]-
()_) ()_)==O=)_)
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post #4 of 7 Old 09-06-2011, 09:35 AM
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit
Posts: 21,057
Do you have any fault codes? A little better decription of how its running would help narrow it down.
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post #5 of 7 Old 09-06-2011, 09:39 AM
bharris68
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1989 YJ Wrangler 
 
Join Date: Jun 2006
Location: Issaquah
Posts: 993
Further - define "Wheeling" - mud, water, rocks? Any branches that may have reached up there and ripped up your wiring harness anywhere?
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post #6 of 7 Old 09-06-2011, 10:49 AM Thread Starter
jeep4life1
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Join Date: Dec 2008
Location: Pittsfield
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By running like crap I mean it idles and starts fine. But when i go to drive away in gear it spits sputters and eventually bogs down to almost stalling. Like it has no power at all. And I went through some small local trails. Nothing serious or above my tires. Also checked 02 sensor and it was half way plugged in. Plugged it in and fixed some old vacuum lines. Still runs the same. No change.
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post #7 of 7 Old 09-06-2011, 11:53 AM
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit
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Check codes like this:

http://www.jeepforum.com/forum/f12/h...codes-1257145/

When you rehooked the O2 sensor did you disconnect the battery? It's necessary to clear the codes and get the ecu out of the default calibration. Post back what you find on the fault codes.
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