I am trying to resolve this issue with my front end shake only under acceleration and between 35mph - 65mph range. I replaced my tension trust arms as they were recommened to be replaced by the delaer and got new non RFTs installed as well, but the vibration still persists. I am going to get an alignment done tomorrow, meanwhile would like to know if you guys have any input. Saw many posts relating tot his issue, but everyone has this issue in different scenarios.

I am doubting my axles as well as this is happening only during acceleration and hard braking at parking lot speeds.

I am more leaning towards rims not being true as I have hit few pot holes on the freeway with RFTs at freeway speeds. After alignment I might take the car to tires shop to get rechecked. I heard that one should use proper hub centric bore adapter while balancing, is there anything else to it?

thanks

 

Does the vibration depend on speed? Faster vibration at higher speeds?

 

The vibration is about the same but depends on how much I press the accelerator.

 

Any codes? Could be a misfire. How many miles on the car? Auto or manual?

 

I don't see any CEL on the dashboard. So not sure if there are any codes not associated with CEL. It has about 98K on it and its an Auto.

If its a misfire, wouldn't that happen when you give gas at idle (which I am not seeing happening when idle)?

thanks

 

Misfire is most likely during hard acceleration, but I did see you say it happens during low speed braking as well? So that would not point towards an engine issue. That is probably a suspension/bushing/axle issue. Non-speed dependent probably rules out the axles. Rims would probably be speed dependent. Same if you had wheel bearing issue.

I would look at these: tie rod ends, front (front) lower control arm bushings, front (rear) lower control arm bushings, strut mounts.

What does RFT stand for? (.... figured it out, non-run flat tires)

 

RFT = Run Flat Tires
I replaced the front (front) lower control arms last weekend. I don't see any play in the wheel when jacked up. I may replace the front (rear) control arms as well as in normal maintenance due to the mileage.