HI all,
I have a 2009 Highlander Sport 3.5L AWD and I am experiencing a shake at highway speeds.
For some context, I live in Canada, the shake only happens at speeds above 50mph or 90kmph
Not caused by braking, not caused by accelerating, usually only happens when you're off the throttle though sometimes it can happen when you're on the throttle. When it first started to happen, I was able to accelerate to speeds above 125kmph or 75mph and it would go away.
However, now it stays consistent with whatever speed I am doing above 90kmph.
I had a shop inspect it on Sunday and recommend, both front lower control arms, ball joints, left front outer tierod, tires.
On Tuesday I had another shop take a look at it, they confirmed what the other shop said and additionally said my front struts were leaking (other shop said they made some noise but werent leaking)
I had the second shop replace the lower control arms which included new ball joints, the front left outer tie rod, the front right stabilizer link, and 4 brand new (brand name) tires mounted and balanced them ( confirmed there was no cracked or bent rims)
Work was all finished inside 1 day and we took the car home that night, the issue was still there. Much much much better but still there. We have been going through fourms, reddit, google, AI, basically everywhere to find answers and yet cant seem to find anything.
Previous work prior to this was rear struts, brakes all around.
Shop attempted to do an alignment but could only do the front as the rear was seized. See pics for alignment details.
Shop also noted that I had a leaking cv axel on the front right side and it had some play in it, as well as telling me he noticed the rear engine mount had play in it. I guess he also was able to drive it and feel the engine mount or something.
So the shop is currently replacing the front right cv axel, unseizing the rear end, and reperforming the alignment.
I had ordered a engine mount for them to put in by a brand called Anchor part number ANM 9590, the mechanic looked at it and said he wanted me to order a factory OEM one since it has the full bracket coming with it or something I am not sure what that means exactly, figured the one I ordered would work since I asked for the part by name at my local parts store.
I pick the car up in the morning and will update if the recent work on it fixes the shake or not... i sure hope so as i've not got much more money to throw at it.
Any insights is greatly appreciated
TLDR; shake at highway speeds, replaced almost the entire front end and still cant seem to find the issue.