Renault Clio shaking when excelerating

Hi,

I have a 2006 1.4 Clio Dymanique and whenever I change gear or press down on the excelerator the entire car starts to shake. I've recently had the same problem and I've had the coil packs changed, however this only seemed to have fixed the problem temporarily. Also, the dashboard backlight flickers at times.
Just wondering if anyone knew what this was because it keeps reoccurring.

Thanks.

Renault Clio shaking when excelerating