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Car going back in forth between gears

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Old 06-19-2011, 08:43 AM
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Default Car going back in forth between gears

Everytime I changed gears and accelerate the car kinda picks up to the right then when I let off I can fell it go back left a little. I tightened all the bolts underneath and it seemed
like it went away for a little bit then came back. I'm just wondering what else it could be besides maybe the trailing arms aren't tight enough ESP with the new SFC's on. Also I have a locker in my rear end if that makes a difference. Just looking for any advice
Old 06-20-2011, 06:13 PM
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Anyone?
Old 06-20-2011, 08:17 PM
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Even a relatively small difference in tire pressures (side to side in the rear) can produce something like this with a locker on the street.
Old 06-21-2011, 07:47 PM
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I would check the ball joints, tie rods, and the alignment. Any variation and it might be off.
Old 06-21-2011, 08:29 PM
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You may need a little more toe-in on the front.
Old 06-22-2011, 10:59 AM
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Is this a weight transfer lift and to the right, then dive and to the left when you let off. Possibly due to PHB suspension in rear? Is it that slight that you are picking up. Or are you literally feeling it in the steering and it has more to do with what others are suggesting of tie rods, and alignment etc.
Old 06-27-2011, 06:42 PM
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I can be in any gear cruising and accelerate and decelerate and feel it going back and forth. But I feel it this most when I shift into gear slowly and just start to give it gas I feel like the rear is moving. The PHB and TA are stock. I have spohn non adj trailing arms and SFCs.
Old 06-27-2011, 08:03 PM
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Like posted above make sure both rear tires are darn close to the same pressure cause it seems to make it worse with a locker. It will always kind of be there with the locker u just kind of get used to it after awhile
Old 06-27-2011, 08:57 PM
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Just checked, All air pressure is good.
Old 06-28-2011, 10:41 AM
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Originally Posted by ffrh911
But I feel it this most when I shift into gear slowly and just start to give it gas I feel like the rear is moving. The PHB and TA are stock. I have spohn non adj trailing arms and SFCs.
That is definetly not what I was talking about. That sounds like something is loose for sure. Maybe you can have someone stand behind car and watch rearend while you slowing engage forward, and rearward etc. Or, just jack it up and grab a wheel and pull! See if anything moves. Forgive me if you already tried this. I may have forgot.
Old 06-28-2011, 12:48 PM
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The U shape part of the SFC that goes around the trailing arm
mount is flexing to be tightend. So the two points at the top of the U are bending inwards. The bolts are completely tight but i'm going to try and put washers inbetween the SFc and the mount. I tried the tug and pull and didn't see anything.
Occasionally I get a loud pop from the rear like the locker is disengaging. This only happens when I'm leaving from a stop. Could the locker be messed up somehow?
Old 06-29-2011, 11:21 AM
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Well, I was going to say maybe a clip in the rearend is broke but that would of let you pull an axle right out I think when you did the pull and tug. I'm no expert. Sorry. Just know enough to be dangerous. Hope you figure it out. Maybe you'll want to pull the rear diff cover and take a look see.
Old 06-30-2011, 10:18 AM
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It's a moser 9"
Old 07-01-2011, 10:20 AM
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Whoops. My bad.



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