Pushes left
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Junior User
Joined: Aug 2003
Posts: 69
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From: florida
Pushes left
Ok guys I got involved in this problem today and wondering if anyone has a suggestion. We have a 2008 F450 with a rescue box on it. It has a kelderman air suspension on the rear all bushings look good, ride height is good. Unit had a bad tie rod end so I had them all replaced and a 4 wheel alignment completed. Truck drives straight under normal driving conditions. Here is the problem. If you are driving along and push accelerator to floor truck pushes left hard enough you have to correct to the right. When you ease off the throttle truck stops going left and you have to steer back left. Is my rear axle having some kind if limited slip problem?
Lead Driver
Joined: Sep 2003
Posts: 7,016
Likes: 208
From: SoCal
I know you said the bushings looked good, but it sounds more like the rear end is shifting around under acceleration. Can you have someone watch it from the sides for any fore-aft axle motion as you accelerate from a stand-still?
I've had a failing LSD try to steer the car, but that was under very hard acceleration that would alternately lock and unlock, sometimes spinning a tire on each side. The car did in fact have squishy bushings in the rear suspension.
I've had a failing LSD try to steer the car, but that was under very hard acceleration that would alternately lock and unlock, sometimes spinning a tire on each side. The car did in fact have squishy bushings in the rear suspension.
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