Front end shimmy when braking at speeds of 60 mpg or more

Creditlady
0

Asked by Dec 29, 2009 at 11:11 AM about the 2007 Chevrolet Malibu

Question type: Maintenance & Repair

I have a 2007 Malibu sedan.  I have just replaced the front tires and the front and rear brake pads and rotors.  After all this, the car's front end still shakes badly when I brake at speeds of 60 mpg or higher and especially if it is on a down grade.  It feels as if the shaking is up near the driver's side passenger cabin.  The car does not do this if I am braking at slower speeds. Any ideas what this could be.  I can't continue to spend money of probable fixes in the hopes we hit the correct  fix.

13 Answers

Richard Moore
55

New pads need some time to bed in so this might be cos your bein to demanding on them to soon.. Other than that! it could be you have a warped disc on one of your front wheels .. Thing is, if it didnt do it before you changed your pads then its almost def your new pads.. ease up and give your pads time to bed or you will screw up your brake disc..

2 out of 2 people think this is helpful.
Clayton Ealey
35

i would say u didnt give the pads enough time to break in like the other guy said, take the front rotors in to get turned, then reinstal them and let the brakes seat before you pound on them. you can start the initial break in by using the brakes lightly for a half kilometer (or 1/4 mile) at a time repeat several times then be nice to the brakes and onlly brake hard for emergencies for the next 1000k after they should be fine

check the tie rods or you bought warped front rotors, it happens sometimes.

1 out of 1 people think this is helpful.
buzzcut73
0

I have the same problem, the pads are fine on mine, the rotors are as well. My wheels just got re-balanced and I have new tires. I hear the same lame answers about rotors and pads, I am going to see if the tie rods are bad, and check into a stabilizer as well. This seems to be a problem on malibu and malibu maxx. If this doesn't fix mine, I am going to trade it off and get a Fusion.

buzzcut73
0

I have the same problem, I replaced the rotors, pads, calipers, and finally the right side cv axle, I am trying the left tomorrow. It feels like the front end is going to come apart as I brake. The car has had several other issues, but most have been easy fixes. By the way, the tie rod ends where fine, the steering control was fine as well. My mechanic said he has actually lost sleep trying to figure out what is causing this. My next step after the cv joints is to buy a Ford...I KNOW that will fix it.

Rucko
3,035

cv joint would not do that . it's either warped rotors or a worn tie rod.

Hulie
10

I check all that an I think it's the motor or trans mounts because when I jacked it up a crunk up the car put it in drive an hit the brakes it shook like hell

1 out of 1 people think this is helpful.
Slevin Kelevra
10

i have the same issue at hwy speeds... some general variance in speed and driving conditions produce a shimmy in the front pass side, but most of the time its under mild to decent hwy braking that i get the worst results. it doesnt feel like a warped rotor, i was guessing a control arm bushing or tie rod...?

1 out of 1 people think this is helpful.
mikethemechanic
0

You're front rotors are defective. Remove them and have them checked on a lathe to find out for sure, or just return them to the store and let them know that they are defective.

Steth04
30

this is a common problem on almost all Malibus, Chevy should have made a recall for the brake system, the problem is the brakes are not large enough for the weight of the car, causing them to heat up. When they are hot, they begin to warp and cause the shuddering. When you drive on back roads <60 mph when you brake you don't notice it because they are not hot. If you drive on the highway and get the shuddering and go to a back road and brake you will still feel it due to them still being hot. Visa versa on highway, if you go straight to the high way drive <60 and haven't used your brakes yet you wont feel the shudder. Once they get hot, and begin to warp you do. Only way I can think of fixing it, which i haven't tried yet, is to buy high end rotors/pads, (drilled and slotted) to let the rotors cool down faster. Also ceramic brakes may help as well. I personally own a Malibu, and it has been hell since I bought it. ECM wont even connect to the obdII.

3 out of 3 people think this is helpful.
Garyctee1
10

I have a 2006 Malibu and it shakes like crazy a little below 60 and really bad around 40. No car I have ever had does this and I've run brakes and rotors right down to metal on metal and never have any cars done this. Only while braking, so not the drivetrain. Garage currently says brakes have 80% and rotor runout is 0.005 inches. I'm not buying warped rotors, 0.005 doesn't sound like much and remember the caliper floats on pins side to side so .005 doesn't seem like much of a challenge. I have also heard rotor warping has not been proven, maybe they wear uneven. It does it with cold cold brakes. I am thinking maybe ceramic pads don't work on this car, bad struts, bad alignment (car pulls slightly to the left) or maybe air in the system. These things could support a resonant response

1 out of 1 people think this is helpful.
Andrew Adams
0

I have a similar problem with my 2005 Maibu sedan. The brakes vibrate really badly at speeds greater than 100 km/hr (60mph) but he vibration is much less noticeable at lower speeds but it is still there. The brakes work effectively to stop the car but the vibration at speed is very unnerving. I had the rotors turned some time ago and the pads are OK so maybe I will have the tie-rods checked next time. It seems like either the discs move side to side while turning between the pads or the discs are of uneven thickness. I hardly ever use the brakes hard so I didn't think that the rotors could be that badly warped by heat unless the braking system is really under designed and constructed.

rxdoc97
0

I have a 98 Malibu. I have replaced the left CV joint, brake caliper (which was frozen), both front rotors. I rotated the tires thinking it may be a tire since it happens at high speeds. Makes no sense it only happens at >70 mph. What about a hub bearing? That would be a problem all the time while driving even at low speeds? Why would a tie rod make the front end shake that bad and wouldn't it be all over the road?

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