VERY loud clunk/pop in the front end
03-23-12, 10:13 PM
Lexus Test Driver
Thread Starter
Join Date: Jun 2007
Location: Arizona
Posts: 1,075
Likes: 0
Received 0 Likes
on
0 Posts
VERY loud clunk/pop in the front end
I'm having a VERY VERY loud clunking/popping going over speed bumps or major changes in degree of wheel travel. Just had the lower control arms replaced and had an alignment done. Everything FELT tight..could this be an upper control arm/upper strut mount issue? I am going get coilovers soon and I want to iron this out while I can.
03-23-12, 10:15 PM
Zombie Slayer
Join Date: May 2004
Location: East Bumble F, NJ
Posts: 6,053
Likes: 0
first check strut itself, then mounts. Then upper control arm bushings. then front sway bar bushings
03-23-12, 10:31 PM
Lexus Test Driver
Thread Starter
Join Date: Jun 2007
Location: Arizona
Posts: 1,075
Likes: 0
Received 0 Likes
on
0 Posts
how often do struts normally last? they've been on the car for about 4-5 years and have around 39,000 miles on them..from Nebraska to Arizona.
03-23-12, 10:33 PM
Zombie Slayer
Join Date: May 2004
Location: East Bumble F, NJ
Posts: 6,053
Likes: 0
really depends upon mileage and how hard (road conditions) the car was driven. But should last 75,000 miles in my opinion
03-23-12, 10:36 PM
Lexus Champion
Join Date: Apr 2011
Location: CA
Posts: 3,118
Also check the main cross member bolts. If I remember it right, there's 4 of them 19mm deep socket 158ft/lbs.
03-24-12, 09:09 PM
Lexus Test Driver
Thread Starter
Join Date: Jun 2007
Location: Arizona
Posts: 1,075
Likes: 0
Received 0 Likes
on
0 Posts
http://youtu.be/yKP5uN1IOPs
I took a video of the noise to further help
03-24-12, 10:57 PM
Lexus Champion
Join Date: Apr 2011
Location: CA
Posts: 3,118
Have you checked what I mentioned? Although from the video, it sounds like your struts are bottoming out or something is hitting something....
03-25-12, 12:36 AM
Lexus Test Driver
Join Date: Sep 2010
Location: DE
Posts: 875
Likes: 0
Received 0 Likes
on
0 Posts
Check your sway bar end links...
You pretty much just have to get down there and look regardless, as it could be a number of things.
03-25-12, 07:39 AM
Lexus Test Driver
Thread Starter
Join Date: Jun 2007
Location: Arizona
Posts: 1,075
Likes: 0
Received 0 Likes
on
0 Posts
End links are fine and those crossmember bolts are very tight idk how tight I don't have a torque wrench
03-25-12, 09:42 AM
Lexus Test Driver
Join Date: Sep 2010
Location: DE
Posts: 875
Likes: 0
Received 0 Likes
on
0 Posts
Take your wheel off on both sides and take pictures for us. Hopefully we can spot it.
Was it popping at all before the install? New or used LCAs went in? Etc
03-25-12, 05:19 PM
Lexus Test Driver
Thread Starter
Join Date: Jun 2007
Location: Arizona
Posts: 1,075
Likes: 0
Received 0 Likes
on
0 Posts
It wasn't popping until the lca were replaced
03-26-12, 10:45 AM
Driver
Join Date: Oct 2011
Location: MI
Posts: 107
Likes: 0
Received 0 Likes
on
0 Posts
Having a very similar issue with my SC as well. I may be dropping it off at a shop to get some help with it. ill let you know if I find anything.
03-28-12, 07:47 AM
Driver
Join Date: Oct 2011
Location: MI
Posts: 107
Likes: 0
Received 0 Likes
on
0 Posts
Well, had it at the shop today and they really couldn't find anything wrong besides where the LCA bolts to the cross member. This area was slightly bent. They straitened it out and now it makes more noise. this leads me to think that my LCA bushings are possibly bad. Any thoughts?
03-28-12, 04:03 PM
Lexus Test Driver
Thread Starter
Join Date: Jun 2007
Location: Arizona
Posts: 1,075
Likes: 0
Received 0 Likes
on
0 Posts
Well that doesn't make sense to me..my lcas are brand new
03-28-12, 05:30 PM
Rookie
Join Date: May 2009
Location: CA
Posts: 81
Likes: 0
Received 0 Likes
on
0 Posts
I would raise the car up and drop the front wheels and check the sway bar end links I had a the similar popping noise
