Car STILL jerks around after doing Group N mounts and Ground

[Zac]

My car still feels the same as it did with the stock broken mounts. Every time I let off the gas the whole car jerks about 3 times. I heard a grounding it would fix this but it still doesnt. I've spent all this money and its still the same, please help :(

[99gtlimited]

you're not gonna fix this with stiffer mounts or grounding, in fact I think the mounts could be making it worse. What you're feeling is the drivetrain shaking as the teeth in the transmission and differentials switch from pushing on the front of the tooth to being pushed on the back of the tooth (something that happens in a transmission when switching from accel. to decel.). It's something that will get worse and worse with time as the teeth of the gears become more and more worn, or if you have a failing bearing in the case.

[iampetro]

how old are your spark plugs and wires?

when was the last time all fluids were changed

[99gtlimited]

check your rear diff bushings as well