Steering is very jumpy even after recalibrating

if its bouncing up and down check your shocks if it feels like its vibrating you need to balance the wheels

I would change the belt first. Power steering is required for all turning but does get a little more usage during hard turns. You will want to check the fluid levels of the power steering pump as well.

Without knowing the Year,Make and Model... I would hate to even guess... Sorry

sounds like a low pressure problem have you changed the filter in a while check the belt tension on the pump

The ESP system needs to be recalibrated after having the battery disconnected. Turn the steering wheel lock-to-lock a couple times. Should recalibrate it.

the system may just need recalibrating the usul way with electronic power steering is to start the engine the rotate the steering wheel full lock both way a few times to let the pas module to recalibrate itself try it it may work unless the reversed polarity has blown the module or sensors

you could try recalibrating your steering will and it should work

There are two bearings in the steering column. One or both may be bad. The most likely problem would be the lower bearing. While someone is turning the steering wheel look under the hood at the bottom of the steering column and see if it is rotating smoothly or kind of jumpy. You might have to place your hand on it to feel if it is smooth or jumpy (make sure the engine is off and the exhaust is not hot).

You may have a Broken Motor Mount. If you have someone Rev it up a little while you look at the Motor, If the Mount is Broken the Motor will Move in one Direction or the Other. It should not move at all when Revved up. Please Rate My Response! Thanks!