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I have a '93 1 ton 4x4 cab and chassis truck(460/5 speed) and recently replaced the steering box as it was leaking and getting stiff.
but now the truck every once and while will jerk the steering around, especially when you make a turn and you have to counter steer it.
It doesn't shake or anything.
I do also have a new drag link, outer tie rods, new pitman arm too. Just can't figure out what could be causing it.
I know the wheel bearings are good, king pins are not loose, and everything seems right underneath.
Maybe a bad steering box?
I have a '93 1 ton 4x4 cab and chassis truck(460/5 speed) and recently replaced the steering box as it was leaking and getting stiff.
but now the truck every once and while will jerk the steering around, especially when you make a turn and you have to counter steer it.
It doesn't shake or anything.
I do also have a new drag link, outer tie rods, new pitman arm too. Just can't figure out what could be causing it.
I know the wheel bearings are good, king pins are not loose, and everything seems right underneath.
Maybe a bad steering box?
I've seen bad power steering pumps (or even pumps that are low on fluid) cause the issue you're describing. If the system loses and gains pressure while steering it can cause the steering to do unexpected things.
A bad new box is possible. I put a new box on my ‘94 Bronco from Napa and it was worse than the leaking box I removed. Another possibility is the u-joint at the knuckle binding up.