Really LOUD squeak coming from the rear of the car!
11-18-2011, 04:09 AM
#23
Found the reason - it was LCA rear bushings rotating dry inside rear-end brackets. Also some noise was from dry PHB bushings. Sqeak-free now 
P.S. Actually LCA squeaks are pretty easy to diagnose, just unbolt front of LCA and rotate it with your hand. Although you might disrupt rear-end alignment by doing this
P.S. Actually LCA squeaks are pretty easy to diagnose, just unbolt front of LCA and rotate it with your hand. Although you might disrupt rear-end alignment by doing this
11-18-2011, 09:01 AM
#24
Glad to see you got it figured out, and I don't know how I missed this post, my apologies. We always suggest people check out the grease ever other oil change, or two or three times a year. Make sure you're using a synthetic grease, too. A petroleum based grease will eat away at the bushing material.
04-28-2012, 10:09 AM
#30
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AAAAAAARRRRGGGGGGHHHHHHH!!!!!! I can't find where this god forsaken squeak is coming from! It only occurs when I'm slowly going over a speedbump through a plaza, and it's really loud. It also happens from time to time if I got over a bump on the road at a certain speed, but rarely since road bumps don't have the up/down shape of a speedbump.
I removed my spare and jack to see if it was that, it wasn't. Now, I took my car to my mechanic to replace a bad valve stem, and had him look at the rear suspension while the car was in the air. They found one thing. The adjustable jamnut on the Hotchkis panhard rod kept coming loose due to it being a little large, so they grounded down the mount on the chassis side a little to make some room for it. Well, that wasn't making that squeak noise.
Also, I had Spohn LCA's with poly bushings and poly rear swaybar endlinks installed last year, keeping the stock rubber swaybar bushings. They where installed using a drive-on lift. The stock swaybar endlinks squeaked at first, but I replaced those with the poly ones and the noise went away.
Fast forward to a couple weeks ago when I had the WS6 springs and Bilstein shock installed. That's when the loud squeak started. I had him use the isolator pads that came with the springs [bought them used], so they should be the stock pads from the WS6 they came off of. But I also still have the stock springs and pads from my car. Would greasing the pads do anything, or would that be a bad thing?
My mechanic agreed to take a look at the spring when I get time to take my car their next week. He also said if it comes down to it, he'll just check every damn bolt and tighten everything down.
I just had my 17" wheels installed last week with 275/40/17 Firestone Firehawk Wide Oval tires [awesome awesome tires btw]. Could the tires be rubbing somewhere causing the noise? I don't see how, since I'm running on factory WS6 wheels and not aftermarket. But still, thousands of people are running those size wheels and tires, and even bigger without problems. And the squeak was happening before the tires where installed when I had the factory 16" wheels with 245/50/16 Goodyear RSA's.
I have one last question. Could a bad shock be causing the squeak? I bought the Bilstein shocks brand new from Summit Racing, so I don't think they could be bad.
I'll tell my mechanic to recheck the LCA bolts, endlink bolts, and swaybar mounts.
Please help
I removed my spare and jack to see if it was that, it wasn't. Now, I took my car to my mechanic to replace a bad valve stem, and had him look at the rear suspension while the car was in the air. They found one thing. The adjustable jamnut on the Hotchkis panhard rod kept coming loose due to it being a little large, so they grounded down the mount on the chassis side a little to make some room for it. Well, that wasn't making that squeak noise.
Also, I had Spohn LCA's with poly bushings and poly rear swaybar endlinks installed last year, keeping the stock rubber swaybar bushings. They where installed using a drive-on lift. The stock swaybar endlinks squeaked at first, but I replaced those with the poly ones and the noise went away.
Fast forward to a couple weeks ago when I had the WS6 springs and Bilstein shock installed. That's when the loud squeak started. I had him use the isolator pads that came with the springs [bought them used], so they should be the stock pads from the WS6 they came off of. But I also still have the stock springs and pads from my car. Would greasing the pads do anything, or would that be a bad thing?
My mechanic agreed to take a look at the spring when I get time to take my car their next week. He also said if it comes down to it, he'll just check every damn bolt and tighten everything down.
I just had my 17" wheels installed last week with 275/40/17 Firestone Firehawk Wide Oval tires [awesome awesome tires btw]. Could the tires be rubbing somewhere causing the noise? I don't see how, since I'm running on factory WS6 wheels and not aftermarket. But still, thousands of people are running those size wheels and tires, and even bigger without problems. And the squeak was happening before the tires where installed when I had the factory 16" wheels with 245/50/16 Goodyear RSA's.
I have one last question. Could a bad shock be causing the squeak? I bought the Bilstein shocks brand new from Summit Racing, so I don't think they could be bad.
I'll tell my mechanic to recheck the LCA bolts, endlink bolts, and swaybar mounts.
Please help
04-29-2012, 07:46 PM
#31
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one squeak i had was the phb bolt hole on the body mount was wearing into an oval shape and therefore shifting - tightened the hell out of it. another noise i had was a shock would rub against a spring towards the inside - hard to see, or the spring rubbing on the body seam between the shock and spring...
if i just coat the whole f* thing in lizard skin will my f body ever be quiet?!?! lol
if i just coat the whole f* thing in lizard skin will my f body ever be quiet?!?! lol
