Hello I have an annoying highway vibration that I am having trouble diagnosing. I'll start with the problem and then explain what I have tried so far. It is a 2007 Tech. I purchased the car last April with 95k miles on it and it has almost 105k on it now. It has always done this the whole time I have had it.
When traveling on the highway at speeds above 68-70 MPH the car has a vibration that comes a goes. I can not feel it in the steering wheel it is mostly felt in the seat and center console and floor area. Leading me to believe that it is coming from the rear. It seems to get worse going around a bend, either left or right it doesn't matter, but this is not always the case. Sometimes it will get worse or better in just a straight line. Sometimes it is almost not there and other times it is really bad. It seems to do it less when it is colder outside. Traveling down the highway a few weeks ago when it was single digit temps outside it was very minimal. This observation was only recently noticed, this is the first winter with the car.
What I have done so far.
-The first set of wheels and tires were road force matched and balanced, and they balanced out great. All wheels were checked for out of round and runout with a dial indicator on the car. Everything was well within Acura specs. - No change
-This same process was done with a second set of wheels and tires when new tires were put on. Bridgestone dueler ecopia. And again everything was well within spec. - No change
-The rear swaybar bushings were replaced with poly bushings. - No change
-The rear differential was replaced (used out of a 2010 with 40k miles). - No change
-Rear brake pads were replaced and rotors were turned. - No change
-All rear suspension bushing were replaced, this includes all control arms and trailing arms. - No change
-The car was aligned. - No change
-Rear shocks were replaced. - No change
-Front wheel bearings were replaced for a different reason. - No change
-The driveshaft(propshaft) was removed and the car was driven without it. - No change
The following is what is next on the list in no particular order, but please let me know if you have any more suggestions.
-Replace rear wheel bearings.
-Replace rear sub-frame to chassis bushings.
-Replace both rear cv shafts.
-Replace engine mounts.
-Replace front sub-frame to chassis mounts.
-Replace power steering pump.
Thanks for any input you might have.
When traveling on the highway at speeds above 68-70 MPH the car has a vibration that comes a goes. I can not feel it in the steering wheel it is mostly felt in the seat and center console and floor area. Leading me to believe that it is coming from the rear. It seems to get worse going around a bend, either left or right it doesn't matter, but this is not always the case. Sometimes it will get worse or better in just a straight line. Sometimes it is almost not there and other times it is really bad. It seems to do it less when it is colder outside. Traveling down the highway a few weeks ago when it was single digit temps outside it was very minimal. This observation was only recently noticed, this is the first winter with the car.
What I have done so far.
-The first set of wheels and tires were road force matched and balanced, and they balanced out great. All wheels were checked for out of round and runout with a dial indicator on the car. Everything was well within Acura specs. - No change
-This same process was done with a second set of wheels and tires when new tires were put on. Bridgestone dueler ecopia. And again everything was well within spec. - No change
-The rear swaybar bushings were replaced with poly bushings. - No change
-The rear differential was replaced (used out of a 2010 with 40k miles). - No change
-Rear brake pads were replaced and rotors were turned. - No change
-All rear suspension bushing were replaced, this includes all control arms and trailing arms. - No change
-The car was aligned. - No change
-Rear shocks were replaced. - No change
-Front wheel bearings were replaced for a different reason. - No change
-The driveshaft(propshaft) was removed and the car was driven without it. - No change
The following is what is next on the list in no particular order, but please let me know if you have any more suggestions.
-Replace rear wheel bearings.
-Replace rear sub-frame to chassis bushings.
-Replace both rear cv shafts.
-Replace engine mounts.
-Replace front sub-frame to chassis mounts.
-Replace power steering pump.
Thanks for any input you might have.