Why my truck jerks

Truck make and model.

Is it a lag in time from pushing on pedal to actual acceleration?
Could be your "go" pedal sensor is starting to fail.
Clean the area under and around your pedal.
Just a guess. Do you get any codes?

 

Check pedal position sensor or the accelerator pedal itself.

 

You are taking off a huge amount of force from those low range gearing. There is a great deal of multiplication of the power in reduction from your engine turning many times to turn your wheel one time to stop the earth from moving and get your big heavy trailer moving.

Take your foot away or clutch in shes gonna lean and jerk. The key is to be GENTLE.

Now if you got the classic pound back and forth thats the 5th wheel being loose with the trailer. Adjust it at the shop.

Sometimes when you ask a truck to move out in deep low shes gonna lean. Hold on to her and let her do what she needs to do until you are out of that spot.

 

Check your driveline for excessive rotational play.

 

Bad slip splines, carrier bearing, egged out yokes, bad ujoints and bad front wheel bearings are my first concerns. I guess pinion backlash could be on the list of things to look at too but havent experienced it.

 

Worn kingpin or lockjaws?

 

Because youre dancing without panties on ??