An oil change is not related to a shudder. That shudder can have a lot of different meanings. If you feel it in the way the car accelerates, that may be due to a misfire and the need for new spark plugs or wires, and things like that. If you feel a shudder in the steering wheel when you first start out, and it goes away as the car speeds up, that is typically due to wear inside one of the inner cv joint housings.
Very often that wear goes unnoticed until other repairs are performed that affect the length of the half shaft, and that is exactly what can happen with a new lower control arm bushing. Those bushings, along with many other parts, affect where the rollers ride inside the cv joint housing. They roll back and forth to accommodate changes in length and angle as the car goes up and down over bumps, and as you turn. The wear takes place in a very limited area. When anything is done to change where those rollers travel, they will go in and out of the worn area. That allows them to bind when rolling over rough spots, particularly when under load, as in when accelerating.
If the shudder goes away when you let off the accelerator, suspect a worn inner cv joint housing. Your mechanic should know how to inspect them and how to identify the wear area. If he doesn't, I can explain it.
Friday, February 20th, 2015 AT 12:37 PM