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What did you do to your ZJ today?

4M views 55K replies 2K participants last post by  rluser 
#1 ·
This thread is to serve as an inspiration to others modifying their ZJ's. Pretty simple, just post what you did to your ZJ today!


Today I shamefully took my Jeep to get the oil changed because it was to hot to change it myself.
 
#29,721 ·
What have you mess with recently, honestly?
Nothing, it sat for about a day, which is abnormal, I usually drive it everyday, with no issues. I drove it for about 15 mins and then parked it while at training for about 6&1/2 hours. When I came back to it, it started fine with no issues. It seems it's only when it's cold. However the weird thing is, it's been colder this season and has given no problems. Not sure if it's throttle body issues or some of the sensors on there or what...
 
#29,723 ·
So I bought a stock intake tube and air box, I currently have a k&n cold air, but it's broken, so I tried to replace the k&n with the stock tube and box, however when I put the stock one on, the threaded post to secure the tube is in a different position on the throttle body then where it is on the tube. Basically the threaded post on my t/b is closer to the front then the hole on the intake tube (air hat) was there a difference in throttle bodies, between zj years?
Junkyard...get the oem bracket/post. If unable to make a jy trip...easy to make one with flat stock/bolts/loctite lol
 
#29,725 ·
So this morning I tried to start my zj. It started with no problems, however I drove it about 100 feet and it stalled. It would turn over but it would stay running. Fuel pump kicks on, I have fuel pressure, and a good spark. It seems that it wasn't getting air. I started it and held the revs to about 800-1000. I did this for a few minutes and let off, it stayed running. I don't know what the problem is. Does anyone have any idea?
Replace your battery. I know i know doesnt make sense, replace your battery. Problem solved.
 
#29,729 ·
Buy a new battery, its strange but a Jeep with a bad battery will crank strong and not stay running. Hold your foot on the gas and the alternator juices it up a little and it stays running. If you want to go back and forth, test it, trust the kid behind the counter in autozone to load test it properly, do this and that, go for it. In the end though you will end up with a new battery lol.
 
#29,730 ·
Sadly nothing. Anxiously awaiting my IRO care package from Kolak. The Niner's currently sitting @ 3.5“, after the short arms and spacers I'm hoping to net 4-4.5" and a more stable ride. Curious to know if I can stuff some 305/70's under there after. If so my Duratracs may be for sale soon.
 
#29,731 ·
Buy a new battery, its strange but a Jeep with a bad battery will crank strong and not stay running. Hold your foot on the gas and the alternator juices it up a little and it stays running. If you want to go back and forth, test it, trust the kid behind the counter in autozone to load test it properly, do this and that, go for it. In the end though you will end up with a new battery lol.
It's because the alternator is regulated by the PCM, which can't get a good reading on system voltage if the battery isn't in good enough condition to stabilize the voltage. So the PCM will run the alternator's voltage as low as possible to prevent damage. Therefore, it'll stall out because it doesn't have enough power to run all the EFI and ignition equipment on a dead battery. The battery that was in my Orvis when I went to test drive it would crank the engine over quickly, but if I revved it, it'd just die. So the dealer got a new battery dropped in and away we went.

It has been awhile, but in the process of selling the ZJ, and buying Toyota Land Cruiser to travel the U. S. of A!
Burn the nonbeliever!
Thats treason. He should be impeached.

Sent from my tent in the woods using JeepForum
I like the Land Cruiser, especially as an Overlanding vehicle, but honestly, I think that's gotta be one of the big advantages to the Grand Cherokee is its ability to run a self-sustaining overland expedition, with all its extra power, space, and offroad capability. I guess the LC would have more cargo volume and has much more pedigree in overlanding, but come on man.
 
#29,732 ·
Sadly nothing. Anxiously awaiting my IRO care package from Kolak. The Niner's currently sitting @ 3.5", after the short arms and spacers I'm hoping to net 4-4.5" and a more stable ride. Curious to know if I can stuff some 305/70's under there after. If so my Duratracs may be for sale soon.
A 305 should be close to a 32" tire, I think, you should have no problem.
 
#29,734 ·
Got a little snow yesterday. Tried to back my wife's Sentra up the driveway (short but steep) while it was covered in about a half inch of snow with a little I've on it. Only got it half way up before it started spinning and sliding sideways.

So I parked it and got in the Jeep, went right up with just a little wheel spin. (5.2, 249) gotta love 'em! She made it to work with no issues this am.

Sent from...wait, where am I?
 
#29,735 ·
A 305 should be close to a 32" tire, I think, you should have no problem.
Actually, a 305/70/16 is 32.8x12 (it'll vary a little by manufacturer but that's what it works out to mathematically). I don't know if that would work well on a 16x7 rim.
I could try 285/75 instead, it's about the same height just skinnier. I'd like to get as wide as possible without worrying about breaking a bead. Trying to stay with the stock niner wheels if I can. If not then I'll wait a little longer until I can get some steelies in 16x8.
 
#29,736 ·
Those are almost an inch skinnier. Mathematically, they work out to 11.2" wide and are still 32.8" tires, again it'll vary by manufacturer. Why keep 16s though? I went to 15x8s from my 16x7 TSi wheels because tires are cheaper for 15s than for 16s.
 
#29,737 ·
Idk lol...still in research mode now. Too much internet and not enough time messing with the Jeep...dang cold weather. I originally wanted to keep the stock wheels but I'm starting to think that's not going to work out for what I'm going for.
 
#29,738 ·
Sadly nothing. Anxiously awaiting my IRO care package from Kolak. The Niner's currently sitting @ 3.5", after the short arms and spacers I'm hoping to net 4-4.5" and a more stable ride. Curious to know if I can stuff some 305/70's under there after. If so my Duratracs may be for sale soon.
Actually, a 305/70/16 is 32.8x12 (it'll vary a little by manufacturer but that's what it works out to mathematically). I don't know if that would work well on a 16x7 rim.
Yeah, a 305/70 is too wide for a 7" wheel. 285/75 (32.8 x 11.25) will work better, but it would still be pushing it a little bit wheel-wise.

If you want to keep the stock wheels, try a 255/85R16. It's a 33x10, so a hair taller and a bit narrower. They'll fit on stock wheels fine and you'll have a lot less fender clearance issues with the narrower tires.

If you want to run the 285/75s, try to find a set of used TJ Moabs (16x8) or buy one of the replica ones available (Mamba MR1Xs are sold through Tirerack). I've got a set of the Mambas for my summer tires, they look pretty good on a niner:
 
#29,739 ·
One thing to keep in mind with any 85 sidewall ratio, you're probably looking at a load range E tire. Our vehicles were originally equipped with load range B tires. I'd like to say lost people run load range C tires when they start upgrading. I don't have any evidence to back up the assumption about people generally running load range C tires on their ZJs, but that seems to be the most common load rating for our most common tire sizes.
 
#29,740 ·
I could try 285/75 instead, it's about the same height just skinnier. I'd like to get as wide as possible without worrying about breaking a bead. Trying to stay with the stock niner wheels if I can. If not then I'll wait a little longer until I can get some steelies in 16x8.
16x8 would be ideal but you have more of a chance breaking a bead with a rim that's too wide that the other way around. a 16x7 rim is a poor mans bead lock. I ran 33x12.50 on stock 7" rims for several years without popping a bead.

Load E tires will ride very stiff but if you need the sidewall protection then that's something you live with. I have had load E on mine for 3 years but since I'm not out west on rocks anymore I would prefer a C range tire.
 
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