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Old 01-14-2017, 11:19 AM
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Pulls to the left. Harder when faster?

2000 TJ 4 inch lift 33 12.50 tires. All metalcloak control arms upper lower front and rear also metalcloak trackbars front and rear. Installed new zj steering conversion,ball joints, axle u joints, hub unit bearings, brakes, calipers. All at the same time. Had alignment done it pulled to the left. Shop guy said he could adjust lower control arm on one side longer to push the axle forward so it would drive straight. Didn't sound like the right approach so I declined. I have them adjust my track bars front and rear to try and align the axle with body. It is still off a little. Will that make a difference? It wanders to the left when driving slow but at highway speed it will change lanes if I relax my grip a little. I was wondering if when he pulled the body over with track bar adjustment if it would have changed my steering geometry? Any ideas to try would be greatly appreciated.

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Old 01-14-2017, 11:22 AM   #2
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Sounds like the alignment is off or caster is low?

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Old 01-14-2017, 11:46 AM   #3
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Have you had it on an alignment rack? Can you post up a print out of it's current alignment numbers? Adjusting the track bar will only shift the axle side to side, and really has no effect on other alignment (practically speaking).
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Old 01-14-2017, 02:24 PM
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I do not have a read out from alignment but the shop said it was within specs. The front and rear axle are not the same side to side rear is off to one side by bout a quarter to half inch. The castor is probably a little low as I had to raise the pinion angle to almost dead even with drive shaft to eliminate vibe. Steering wheel is off center to the right when driving. I know that's an easy fix but wanted to address the left pull before I fixed it straight.
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Old 01-14-2017, 02:54 PM   #5
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Sounds like you need a different alignment shop. Centering the wheel is part of an alignment, and they should provide a printout.
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Old 01-14-2017, 03:06 PM
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Definitely wont be going back to them!!! I can probably do it myself I have already had the whole front end apart. Just cant figure out what it is that I'm missing or overlooking something. Probably simple just cant see it. Just measured front axle to back axle and both sides were exactly the same. I measured toe in and it was one eighth inch narrower in front. That should be close enough right? Also rotated tires front to back and switched sides.
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Old 01-14-2017, 03:16 PM   #7
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Originally Posted by crashmurdock View Post
Definitely wont be going back to them!!! I can probably do it myself I have already had the whole front end apart. Just cant figure out what it is that I'm missing or overlooking something. Probably simple just cant see it. Just measured front axle to back axle and both sides were exactly the same. I measured toe in and it was one eighth inch narrower in front. That should be close enough right? Also rotated tires front to back and switched sides.
Yep that sounds pretty good as far as toe in.

Any chance you have a brake dragging causing the pull?
Did you flush the fluid before doing the brake work?

Sometimes what happens is when the old caliper piston is compressed, pushing some settled crud from the old caliper into the line. Then you install new caliper and bleed, the crud then gets into your new caliper and causes the piston to stick.

After you drive it for a while, see if one wheel is significantly hotter than the other.
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Old 01-14-2017, 03:43 PM
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Yes I flushed and bled the entire brake system. Also checked for the heated wheel issue all felt the same. I also jacked it up spun the wheels there no resistance and both spun really easy.
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Old 01-14-2017, 04:00 PM   #9
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Rear thrust angle, or bad rear ca arm bushings can also cause that. Measure your rear axle from the axle to one of the transfer case skid bolts (on the same side and straight)' then take the same measurement on the other side of the jeep. Both measurements should be the same. Once they are, take measurements from rear axle to front axle on both sides and make sure the axles are parallel.

Also check for worn ca bushings. One axle sticking out to the side more will not have any effect.
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Old 01-14-2017, 04:43 PM
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Just measured Back axle to front skid plate bolts they are the same. Also I already measured axle front back both sides same again. All control arms are brand new Metalcloaks so I'm not thinking its a bushing out. Thanks for all the replys so far. Any and all ideas are greatly appreciated.
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Old 01-15-2017, 01:22 AM   #11
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My last guess would be low caster affecting the handling, if everything else checks out.
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Old 01-15-2017, 10:50 AM   #12
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Check the obvious ... low pressure in that tire? My Jeep started pulling one morning and I had picked up a foreign object in my tire.
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Old 01-15-2017, 11:17 AM   #13
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Quote:
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Just measured Back axle to front skid plate bolts they are the same. Also I already measured axle front back both sides same again. All control arms are brand new Metalcloaks so I'm not thinking its a bushing out. Thanks for all the replys so far. Any and all ideas are greatly appreciated.
You shouldn't use the skid bolts directly to measure to. Because the angle is fairly severe from the axle to the frame, a small amount of lean even just an out of level driveway will cause the two dimensions to be a fair bit different from side to side.

You can use the bolts but you need to put a square on them and point the leg of the square down so you can measure straight forward or back parallel to the ground to get your dimensions.
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Old 01-15-2017, 11:59 AM   #14
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The front upper axle bushings are not replaced with new arms. You'll have to press those out or torch them as some do. I would take a look there to make sure they are ok
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Old 01-16-2017, 09:07 PM
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I will have to check those. They have not been replaced. Whats the best way to tell if they are worn? How hard are they to change I read they had to be pressed in? Which replacement bushing would be the best ones? Thanks.
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Old 01-22-2017, 08:41 AM
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Well I replaced both front control arm bushings. It was quite a job them don't come out easy or go in easy!!! BUT It still goes to the left. The bushing rubber was worn to a frazzle. Was really hoping that would do it. Any other ideas will be checked into and tried as I would like to get this beast to drive straight. If anyone has any ideas they will be greatly appreciated. Thanks!!
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Old 01-22-2017, 11:32 AM   #17
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Did you ever find out what your caster was?
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Old 01-22-2017, 06:43 PM
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it is probably low because I had to raise pinion angle to remove vibes to just about dead even. I talked to another alignment shop they said maybe move one lower CA in while moving the other out just a little goes along ways he said. Does this sound right? It didn't pull left when I had fixed lowers on the front. Not sure making them uneven now with everything new would fix it either. Any Ideas? Thanks!!!

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