3 months ago coil from cyl 1 went bad so i replaced it , week ago wire went bad so mechanic replaced it. after i picked it up from the shop my car doesnt accelerate well , meaning if i press gas pedal over 60% it starts jerking and engine cell blinking , and than it goes away.
When stationary RPM arrow idles very slightly.
When in gear with brakes applied it has jerking coming from underneath the car every 5-7 seconds , like single burst every time.

Called my mechanic, he said all 4 coils have to be replaced at once. and that should fix it. Just bought all 4 coils about to replace them.

Any thoughts bout that ?

 

Did you pull any codes prior to buying a new set of coil packs?

For future referance, include what year your car is, what engine, and such. I assume 1.8T because you said all 4, and I assume your auto because you said in gear, brakes applied.

If you have the codes pulled before posting as well, include them as well, they are a great help to the collective awesomeness of several knowledgable people here.

Also, it is not required to replace all 4 coil packs at the same time, but it's not a bad idea either, because once one goes, the others tend to follow.

Finally, welcome to the forums!

P.S. If you set yourself up a sig like mine below, you don't have to write it every time you have a question...

 

Sounds to me that your mechanic got it wrong in diagnosing it as a bad coil wire. Replace the coils like you've said and let us know the update, we can go from there. How do the plugs look?

 

Yeah, plugs too, especially on a turbo. These things eat plug, change at least every 10K miles...

 

Replaced all 4 of them no acceleration or vibration issues. Plugs look real bad , well 3 except for the new one. Will have to be replaced soon, because RPM arrow still idles lil bit. next project front oxygen sensor and brakes , which one is easier ?

 

I think your next move should be to clean the throttle valve if the idle seems off. Pull the hose going into the throttle body and spray from brake cleaner in there and use a cloth to wipe away any carbon build up there might be in there.
A seafoam treatment in the intake before changing the plugs is also a good idea.
Search on the forum for seafoam treatments as i don't have the energy to type it up.

 

+1 on the Seafoam, then change those plugs. O2 sensor should be much easier than doing the brakes, but the brakes are pretty easy. If you're doing the front and rear brakes, make sure you rent (or buy if you really want to) a piston compressor that will screw the piston back in on the rear calipers, but make sure you remove the cap from the brake fluid resevoir or you can damage some seals.