Hello, 2006 mk2 focus is shaking and vibrating badly. When driving at all speeds and especially when braking. At low speeds car feels like "jumping" at every tire spin. I have balanced wheels, changed tires, all brake discs and pads, control arm bushings, shock absorbers, both of front wheel bearings and drive shafts but problem is still here.  I noticed, when car front end is lifted up on jacks and I spin wheels at 4 or 5 gear, car starts jumping and vibrating very hard... Any help would be appreciated, and sorry for my language. :)

Engine and gearbox mounts? 

nothing wrong tomorrow, it just a annual thing that effects certain days in April beginning with 1

I'll take a look :) thanks

Just a thort, wat engine do you have? Also, have you had the flywheel checked? Cud be it's inbalanced., Badly worn.. 

It's 1.6TDCi 80kw. I guess I need to check flywheel..

3 hours ago, Elidka55 said:

It's 1.6TDCi 80kw. I guess I need to check flywheel..

Also the engine/gearbox mounts, diesels chuck out a load of torque (which wants to twist the engine within the engine bay when you put the engine under load) as well chucking out a load of vibrations.

Until recently I was starting to get increasing bad vibrations when loading the engine, so replaced my lower mount (the rubber bit had failed entirely so the mount wasn't really doing anything useful at all!) as well as replacing the upper mount (the one with the squidgy rubber bladder in the middle) and this has transformed the engine.

It might not be the root cause of your problems but is certainly worth a look, and would be a lot cheaper to fix if it turned out to be the root cause than a new flywheel/clutch.

12 hours ago, Elidka55 said:

when car front end is lifted up on jacks and I spin wheels at 4 or 5 gear, car starts jumping and vibrating very hard.

That is a red herring, probably.

I tried that (at a garage), and because the rear wheels are not rotating, the traction control was cutting in and braking the front wheels hard. The garage cooked my clutch quite a lot in persisting with trying.

Having said it is a red herring, just possibly there is a problem with the ABS, one of the wheel sensors not quite reading right, and the traction control is doing this. If it happens in all gears and in neutral with the engine idling, and when braking, it is less likely to be the engine.

I did think about removing the ABS fuse to disable it to repeat the test. I was trying to locate a grumbling wheel bearing. I did not try it, just as well because it turned out the bearing needed the weight of the car on it to grumble, so it would not have worked. But it could eliminate ABS/Traction control in your case. You may need a code reader to check and reset the codes generated by the ABS fuse removal.

2 hours ago, Tdci-Peter said:

I did think about removing the ABS fuse to disable it to repeat the test. I was trying to locate a grumbling wheel bearing. I did not try it, just as well because it turned out the bearing needed the weight of the car on it to grumble, so it would not have worked. But it could eliminate ABS/Traction control in your case. You may need a code reader to check and reset the codes generated by the ABS fuse removal.

On a Ford Focus mk2.5 we used at a skid pan, ignition off / ignition on was enough to clear the codes (they'd rigged a switch in-line with abs/esp modules). If not, battery d/c and reconnect would probably do it if stubborn. Appropriate fuses out and driving around would eliminate or identify ABS/ESP as a cause too as you said.

As discussed with them (and on here somewhere),  "ESP Off" does not mean totally off. I didn't actually figure out what it even does, because on my car you can still hear the pump/solenoids actuating (albeit less).

Ok, I'll take a look, but my car is not fitted with tranction control, it has ABS only.

Ok, I'll take a look, but my car is not fitted with tranction control, it has ABS only.

11 hours ago, Tdci-Peter said:

That is a red herring, probably.

I tried that (at a garage), and because the rear wheels are not rotating, the traction control was cutting in and braking the front wheels hard. The garage cooked my clutch quite a lot in persisting with trying.

Having said it is a red herring, just possibly there is a problem with the ABS, one of the wheel sensors not quite reading right, and the traction control is doing this. If it happens in all gears and in neutral with the engine idling, and when braking, it is less likely to be the engine.

I did think about removing the ABS fuse to disable it to repeat the test. I was trying to locate a grumbling wheel bearing. I did not try it, just as well because it turned out the bearing needed the weight of the car on it to grumble, so it would not have worked. But it could eliminate ABS/Traction control in your case. You may need a code reader to check and reset the codes generated by the ABS fuse removal.

 

15 minutes ago, Elidka55 said:

my car is not fitted with traction control, it has ABS only.

The stability control system (ESP) is an optional extra, because it has extra sensors for yaw rate and steering angle.

I could be wrong, but I thought a basic traction control was built into all the ABS units. My handbook does not mention traction control at all. Also the shaking problem during the garage test continued even with the ESP switched off (that has an off button in my car).