Smoke, bad smell and slow acceleration on left front wheel
I have a 1994 Buick Lesabre. We replaced the brakes, rotor and caliper and now the left front wheel on occasion starts smoking, gets really hot and smells horrible. When this is happening, the car doesn't pick up speed very well. When I pull over for 5 or ten min. and then try to drive again it works just fine. Not sure what the problem is and since it doesn't happen all the time, the mechanic can't seem to find the problem. Any ideas? Need help!
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This will likely be the left brake caliper piston is 'frozen' and cannot release once the brake peal is released after applying them. This causes overheating of the brake rotor, thus creating smoke, heat and smell. If you look at your rotor it is probably a blue color, which is not normal. However, in some cases the brake caliper that is frozen will not work and overloads the opposite side. The brake calipers must be checked for piston movement - by removing the caliper and trying to depress the piston back into its bore, if it will not depress the caliper must be replaced. The same holds true for the rear.
First of all I would be arguing with the first shop for a refund. you reported an issue with the LEFT wheel and they worked on the RIGHT wheel...The "flex" line your refering to is probably the short length of brake line from the caliper to the hard line.
If the caliper was "locking up" you would get lot of grabbing and the car would veer to the left when you applied the brakes. I suspect the wheel bearing is bad.
The bearings on a LeSabre are part of the hub assembly. The hub and bearing will have to be replaced as a unit. To do this you'll need to raise the car, remove the wheel, remove the caliper guide bolts, lift and support the caliper-I use a bent metal clothes hangar to support. Do not loosen the brake line. Slide the brake rotor off the lugs. Disconnect the electrical connector for the antilock brake system. The connector is behind the wheel. Then remove the four bolts holding the hub assembly. The bolts are behind the wheel. Be sure to hold the hub while removing. To install reverse the order. Be sure to check and tighten bolts to specifications when reassembling.
May have a leaking right front caliper thats not applying evenly with the left.Look at the front wheels for excess brake dust.The left wheel should have more dust then the right.Also front left rotor may be pitted causing more friction and excess grabbing on the left.Any brake shop will pull the wheel off and inspect the rotor for free.Dont let them try to sell you two rotors or calipers if only one is bad.Replacing both right and left brake pads is OK
caliper is sticking or pads are sticking ,proportioning valve with vehicle jacked up and supported and wheel removed inspect pads and rotor for damage excessive wear if good- turn hub/rotor by hand have someone assist u by stepping on brake observe brake caliper stop then release brake piston should release slightly from pad try turn hub again w/out touching brake if stuck in place replace and caliper released replace pads if caliper still clamped remove caliper and inspect for leak or damage compress caliper and try brake again if does if sticks again replace caliper
Remove ½ of the brake fluid from the master cylinder with the syringe and replace the cover. Discard the fluid.
Remove the front hubcaps and loosen the wheel nuts using the lug wrench, but do not remove the nuts.
Lift the front end of the LeSabre with the floor jack and secure safely onto the jack stands.
the wheel nuts and wheels. Screw one wheel nut back onto a wheel stud
hand tight to retain the rotor away from the caliper assembly.
Place a large C-clamp over the left inboard caliper housing and the outboard pad, and tighten to compress the caliper piston.
the two caliper guide bolts using a box end wrench. Remove the caliper
and secure it to the vehicle chassis with mechanic's wire or a metal
Remove the outboard pad from the caliper on the LeSabre first. Pry it off the outboard caliper housing using the screwdriver.
Remove the inboard pad by lifting the retaining clips out of the caliper bore.
the surface of the caliper bridge that contacts the backing plate of
the pads using a wire brush, and apply a thin coat of brake lubricant
to the contact points. Be careful not to let the lubricant get onto the
the new inboard brake pad and shim into the caliper piston bore by
pressing the retaining clips into the bore until it locks into place.
the outboard pad onto the caliper housing, making sure to align the
retaining clips into the holes in the caliper. Use the screwdriver to
convince the clips onto the caliper if necessary.
Replace the caliper over the rotor.
off the surface of the guide bolts and apply a light coat of lubricant
to the smooth surface of them. Align them properly through the rubber
boots and bolt the caliper to the knuckle. Tighten the guide bolts
using the wrench. Remove the wheel nut from the wheel stud securing the
the wheel and wheel nuts. Tighten the wheel nuts snugly, and re-tighten
them (with a torque wrench is recommended set at 100 foot pounds) once
the LeSabre is back on the ground.
Repeat steps 5 through 14 for the right side.
the brake pedal when you're through to seat the new pads against the
rotors, then check and add new brake fluid to the master cylinder.