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Do you know where I can find the id numbers on the rear housing? I am trying to find out if my 91 YJ has the factory trac lock rear or not. Want to get a powertrax locker, just want to make sure I get the right one.

1066144 Oops! My bad! It is a 91 YJ 2.5l 5-speed. TPS was changed, no luck.[addsig]

1069634 I changed the fuel filter, idle control valve, nothing better. It is the MPFI. I will try cleaning also and see if it helps. Thanks for the advice and if you can think of anything further let me know.[addsig]

1064672 Thanks for the reply. I tried your suggestions and I also re-installed the old O2 sensor but no good. Still barely runs. Do problems with the MAP and Crankshaft Position Sensor cause this?[addsig]

1064727 Not taken the wrong way...freebees. Can't beat that if I can use them.[addsig]

1064970 It is Fuel Injected.[addsig]

1064656 I had a bad muffler and changed it today. While I was at it, I figured I would go ahead and change the Cat conv since I was done there along with a new O2 sensor. My problem is after I installed this the wrangler idles at 1300+ rpm's, then drops down and tries to idle around 600 rpm's...

1064697 I have to replace the hood on my YJ and was wondering if a CJ hood and grill will work? Do I need to get CJ fenders also?[addsig]

1064870 I just installed a pacesetter header on my 91 YJ, 2.5l. Fit and sound good, for a 4cyl. Anyway, having a problem I need help with. The engine now idles around 1500 rpm's and at around 3500 rpm's and above it seems to load-up/stumble/miss bad??? I triple checked to ensure the...

1064948 Another problem...does not idle below 1500 and stumbles at/does not go above 3500rpm's???? Any ideas??? Could not find a vaccum leak and has new distributer, wires, plugs, cap and rotor???? Is it possible that it could be the ignition control module? I am running out of ideas and...

1065482 My clutch just went out yesterday and needs replacing. Are there any recommendations to replacement parts? Should I do it myself or have it done? Is the slave difficult? stock/aftermarket/performance parts? It will be driven on the road primarily 95% of the time? Your assistance...

1066046 ok, ichecked my vaccum lines and they seem to be alright, but it still idles around 1700 rpms. Any ideas? :-? [addsig]

1066047 It is hard to get in gear and when it does it engages when I release the pedal only a little about 1/2 to 1 inch. Did not give me much notice, worked fine now it does't. Usually when a clutch goes on me it just slips with no engagement. Is the problem in the clutch or transmission...

1066048 It is hard to get in gear and when it does it engages when I release the pedal only a little about 1/2 to 1 inch. Did not give me much notice, worked fine now it does't. Usually when a clutch goes on me it just slips with no engagement. Is the problem in the clutch or transmission...

1066424 I plan on replacing the clutch this weekend with a LUK clutch kit with slave...are the any recommendations, tips, or advice...I have not done a clutch replacement in about 10 years. Your help is greatly appreciated, I only want to do this once and have it done right the first time...

1066524 OK, Installing my body lift and got down to the last bolt (of course) and the bolt/threads are stripped...I could use your advise on removing it. Anyone run into a similiar problem? Pass. side mount just behind the front wheel. :-? [addsig]

1067303 I need some help...my 91 YJ, 2.5l fi, will not rev past 3500 rpms and then sputters at that range?? I am not sure, so I changed a few sensors and ciol with no luck. It also is idleing rough. I also cound not find any vaccum leaks. Anyone have any ideas???? Timing chain??? :-...

1068320 I am looking at replacing my tires soon on my 91 YJ. I will be going with 31" and was looking at the Mickey Thompson Baja Claw Radial Tires or the Goodyear Wrangler MT/R. I want a tire that will be good in any conditions (on/off road). The Baja Claws are about 15% cheaper, however...

1069561 Having problem with the idle, will not stay steady. Idles up/down between 850-1100. 1991 YJ, fuel injection, 2.5l 4cyl. with about 120k miles. Changed the plugs, wires, cap, rotor, TPS, etc. I took it took one shop and they could not figure it out. Any ideas (engine/valves...

1071384 I know this probably has been posted before...for a 91 YJ with 3 inch lift. I am looking at 15x8 wheels, but unsure of the backspacing (I have seen 3 5/16 to 5 1/2). I to not want it to rub, however, do not want it to stick out to far either (trying to avoid the extended wheel flare...