Any Idea what's wrong with my car? - Shaking?

Question

Anyone can tell me why my car feels shaky when i accelerate during 80-90km/hr? if i drive normally, everything seems ok. but when i add gas a little at 80-90 my whole car start shaking. Eversince i change my tyres, i got this problem. I balanced the tyres and check my alignment twice, but still the same. Help please. My car is 1 1/2 years old ford Focus Sedan 1.8 TDDI.

I'm using BFGoodrich 185/65-14 tyres. i also try to rotate from front to back. Still no avail.

and the surface is very even. also i balanced & align at Michellin center.

and it happens only when i accelerate a little at speed between 80-90km/hr

I just check my rear tyre surface and it's kind of uneven. Can this be the cause?

Answer 1

Sometimes a new set of tires will actually have a manufacture defect, like a bad belt. All it takes is one bad tire out of the four to cause problems. Take it to Ford, as it is under warranty and they will check. They will let you know right away if this is the dilemma. They will check all their stuff first just to be sure it isn't a bad tire.

Answer 2

If its not wheels or tyres take it to a dealer there may be a problem with some of the sensors or the ECU affecting the running of the engine under load. It could also be a stuck valve or faulty spark plug and or lead

Answer 3

Tires need balancing, get them balanced again.

Front wheel drive. The only other thing is a faulty Constant Velocity (CV) joint may be loose. Either way because it only happens at certain speeds and not all the time, something is out of balance either with tires, or drive-train. The spinning components.

Answer 4

ok i helped some friendly people once with a focus. jack the thing up and check all 4 wheels for play.just use a bar underneath.pry up on the tire. gawd the rear wheel fell off this 1, college car.
hey if you dont fix and mantain, all cars are pure dee junk.

Answer 5

i own a shop,and the one thing i can tell you to check is the front axles, one of the can warp on you without you knowing it,and this will cause real bad shake in the car ,and most people over look it especially repair shop,s they check the boots on the axles and assume that the axle is good,you can put it in the air running with the front wheels propped ,at a shop,and you can see them if their warped ,id have a shop do it though its not safe for most home mechanics to try this,but that would be what id look for,good luck with it,i hope this help,s.

Answer 6

try balancing wheels on the car and make sure tyres are mounted prop on rims if this does not work next things to check are your front shafts and cv joints in reverse does it making a clicking sound? if so cv joints

Answer 7

Its got to be the tires, if thats when it started, and if its only at certain ranges it leads to them being out of balance, you had a shop balance them or you did it yourself? I would check the thread on the tires and look for any abnormalities or damage.

Answer 8

I had this problem a few weeks ago. Turns out two of my wheel studs were broke and caused the front wheel to vibrate violently! Check it out!

Answer 9

Because ford focus sucks, I know I drive one. Trust me, you'll have more problems soon.

Answer 10

yeah that means its going to fall apart
for some reason focus suck! my mom has a focus and we were driving in it the other day and all of a sudden the the whole tire felll off!!
all i seen was sparks and the tire role past the passenger window..i was like wtf.