Posted: Sat Apr 06, 2013 11:41 am Post subject: Vibration and popping in front end
I have a 2001 Impala 9c1. I have a vibration that is really prominent during moderate acceleration. There is also occasionally a popping noise in the front end when I crank the wheel, although this only seems to happen while standing still or backing out of a parking space. I have jacked up the front end and did a wiggle test on both front wheels. There is no appreciable movement top to bottom or side to side.
Thanks in advance
_________________ I feel more like I do now than I did when I first got here.
Tighten your cradle bolts. Many werent tightened well from the factory, and vibrations and wearing of the rubber cradle bushings makes them looser as well.
_________________ 2002 Galaxy Silver Sedan - LS cluster - Debadged - Intrigue compass/autodim mirror - DIC - Regal graphite leather seats - LS console with floor shift conversion - Monte Carlo black leather steering wheel - LS springs - KYB GR-2 Struts - GMPP sway bars and rear STB - Fog light frontend harness - LS Bumper with fog lights - Painted trim and side skirts
2006 Nissan Murano - Autodim/compass mirror
2006 Mercedez-Benz E350 - Stock for stock, its faster than an SS, woot!
Try backing up with the wheel turned full lock in both directions. It sounds like a CV joint that is binding/ready to fail. If the symptoms apper at full lock to the left check the passenger side axle and vice versa. Getting it up in the air and inspecting the joints usually reveals what causes that kind of failure. Worn, cracked, or damaged CV boots. I don't know about the cradle bolts but if you told a mechanic that it pops when your'e backing up and turning the axle is the first thing he's going to check.
_________________ ASE certified parts specialist.
1988 Mercury Cougar Blue Max edition. SOLD
capitlj and Bill58 , I looked at my CV axle and the inboard boot is torn and leaking on the drivers side. I actually knew this before I posted. I had been hearing some snapping and cracking noises...thought it was my intermediate shaft. Since I posted the noise has gotten worst. I have also noticed a slight play in the wheel bearing, so that will replaced too. It says in the factory manual to replace the bolts that hold the bearing to the knuckle. I read in another form a BMW master mechanic say they have never replaced wheel bearing bolls. I don't ever remember replacing them either any ideas. .oh yeah I hope my engine mount is not what caused the tear in the cv boot, you know a bad motor mount. thanks for all your posts , any ideas post them. next weekend I plan to replace the cv axle, maybe rebuild. I have the kent moore swage tool and the boot retaining clamp tool...got them both on ebay for under $25 for both.
_________________ LA1 2003 IMPALA
Today is the oldest you have ever been, yet the youngest you will ever be.
It's good common practice to replace those bolts, they shouldn't be a big expense if I remember.
When I did my wheel bearings (which was a pita because of salty winters) I just used red loctite on the bolts. If I had the chance again I would of got new ones, for piece of mind.
Haven't heard anyone on here rebuild their cvs axel but if you know what your doing you should be fine. Also, I highly suggest replacing the wheel bearings with timken bearings.... You'll find them cheapest on amazon or rockauto.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum