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1063693 I installed the mopar MPFI system on my 1990 YJ. It was easy to install and I dont stall out on the steep hills any longer. The HP gain Im not sure about because I installed a 4 inch lift and 33in tires at the same time. The MPFI is a lot of money. Ive heard from others that...

1063697 I pulled my AX15 transmission out a few months ago. There are two bolts at the top of the bell housing (one on each side) that are 12 point heads. I couldnt see them and stripped them. Took some grinding at very hard angles to get to them. If I remember they were a size 12mm (I...

1063816 Ive never had problems with pinging. I first used this MPFI on my stock 4.2L and no problem. I have since rebult the engine and put the 4.0L head and had the engine bored .030 over and still havent had any pinging. I use 87 octane. I know others have reported pinging but I guess I...

1064256 There is no real way to do it cheap because after you get the larger tires on you will notice you have lost a lot of power. You will want to regear the diffs to get that power back and getting the ring and pinion aligned isnt easy, so more money to a shop for the diff work. [addsig]

1064259 I have the 8000lbs electric milemarker winch. When I got it I could not get the remote to move the winch in both directions. I did some troubleshooting on it and found one of the solenoids to be bad. I called milemarker and they sent me a new solenoid. I but the winch on my Jeep and...

1064261 I have a 1990 YJ 4.2L. Intalled the MPFI $2100. Year later rebuilt engine bored .030, installed 4.0 Head $1400 and Gibson Header with custom crossover pipe because the Gibson didnt come with an O2 plug $120. As long as it was torn apart I put a new stock clutch in $165. A few...

1064262 If you already paid somebody to fix it and its not fixed, I'd take it back to the mechanic to see it they would look at it again, for free labor, because they didnt fix it.[addsig]

1066965 I ground my pitman with a 4" grinder in three places until it was paper thin and then it came off. Make sure you dont grind into the steering box shaft teeth if you go this route. My brake lines were rusted bad. After I stipped the fittings on the front, a pair of vise grips got...

1067161 I took my 90 YJ in a couple months ago and they replaced the parking brake assembly I was having trouble getting my parking brake adjusted so I had them look at my rear brakes while I had it there. They noticed the self adjusting assembly on my passenger rear had the wrong type on it...

1067165 My rear trac bar has been off for over a year and I think it even rides a little smoother without it. I have my front off also. I make sure I dont high speed corner, but who would in a Wrangler.[addsig]

1068167 Some auto parts store will hook there scanner up for free. Autozone has done it for me before. Call around and ask.[addsig]

1069599 This just happened to me. It was the vaccum switch on the transfer case. But like everybody has mentioned, you must see if it's actually out of 4wd and get a vaccum gauge and troubleshoot. Mine was not in 4WD but the light was staying on. I used a Haynes maunal and followed the test...

1064646 Your fuel thing is your roll over valve. My 90 YJ's broke off also. I used large heat shrink and electrical tape to put it back on. It's a vent for your tank but if your Jeep ends upside down then the valve shuts to keep all the fuel from spilling on the ground. Your clutch area...

1065015 I have a 1990 YJ. I put on a 4" lift and 33x12.5 and the same time on put the MPFI on. I could not use 5th gear very well on the freeways. I think gearing the diffs to 4:11 will be a lot better than anything you can do to that engine. After I changed my stock 3:07 to 4:11 I noticed...

1065239 I just started my hurculiner also. The bolts for the front seat belts were stuck good. I just cut them out and tonight I plan on welding a plate with a new nut welded to it. One of the bolts for the back seat I drilled out and will weld a new nut in place. These bolts have taken...

1065613 Ive tried this. It will die when you disconnet the battery cable with a good or bad battery. Just about any auto parts store will check your battery for you, just take it to them. They can check your alternator also but you have to take it off yourself.[addsig]

1074328 When I was looking into some engine mods in CA I had to see a REFEREE. I found them online under a smog search. The referee was an instructor at a local community college and he knew all the rules. He did say the engine must be newer then the truck. Any smog shop would probably...