Question about 1997 Buick LeSabre

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I have a vibration shutter noise sometimes at about 60 MPH. I had the tires rotated and balanced. The wheels seem to be tight. My shocks are bad. If I brake or kick the transmission into a lower gear the vibration stops. The vibration is not in the steering. It does not do this all the time. Got any Ideas. Its in the shop now, and a technician discovered the battery cables are loose. They fixed that, he said that may of been setting off the abs system?

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  • Buick Master
  • 1,108 Answers

No, it wasn't in your ABS system, ever. Your problem is a faulty fuel injector or possibly as much as a bad valve. These 2 things, one or the other, cause a dead cylinder. One of your cylinders is misfiring. Last # in a code will tell you which one is misfiring. If just an injector, check that is good or bad with an ohm meter on the injector pins with the harness off of it. If it shows a large difference between it and the other injectors, that's the bad one and needs replaced. If not an injector fault, do a compression test on all cylinders with ALL plugs out so it turns over freely. If one cylinder comes up low compression, you'll need a valve job done. Good luck friend, I hope it's just an injector.

Posted on Jun 15, 2017

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Posted on Jan 02, 2017

emissionwiz
  • 75066 Answers

SOURCE: vibration if front end, had

If you could rack the truck and run the rear wheel at the speed untill you feel rhe vibration you might be able to isolate it, I agree, it may be a drive shaft issue, have you checked the u joints for wear, all of them,?

Posted on Aug 04, 2008

SOURCE: Ford Focus vibration from the front end 50-70mph

It is a bad halfshaft, I think.

Posted on Aug 13, 2008

AviatorF18
  • 29 Answers

SOURCE: Noise and vibration above 50 mph

Sounds like front differential or front drive axle issues. Check the front differential gear oil then take er' to the dealership before you end up spending a bunch of $. Most people change their oil frequently in the engine but forget about flushing the transmission fluid and changing oil in the front and rear differentials. I have three Ford 4X4s. Two which really get used hard. The 93 has 311K miles and still runs excellent. Trans and differentials get a fluid change every 25K miles and moble one synthetic engine oil changes every 5k miles.

Posted on Jan 25, 2009

emissionwiz
  • 75066 Answers

SOURCE: vibration from 45-60 mph..new michlin tires ,aligned and balanced

have the steering rack checked for excess play, also have all the front end bushing checked, this is a common cause of this type of problem, it is the front end that is doing it, finding the worn part(s) is the job that needs to be done to correct this.

Posted on Mar 25, 2009

  • 3 Answers

SOURCE: Vibration at 60 mph

Not sure but it sounds like you could have a warp brake rotor. The drive shaft is a possibility however you should be able to check it easy enough to see if any of the U-Joints have movement. The only other thing that comes to mind is wheel bearings and they are a little harder to check properly. Good luck.

David

Posted on Jun 21, 2009

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I have a 2002 Escalade which vibrates after 60 mph until above 85 at which speed vibration stops. I have replaced shocks, struts, almost all front end suspension parts including rods and control arms. I...


Its possible you have a damaged wheel. A wheel could have been damaged/warped when the first set of tires were replaced. Spin balancing machines "balance" the tires at about 30 mph. Generally that covers things up to 60 or 70 mph on the road.
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Most likely a tire/wheel balance issue. The weights that are used to balance the tires can sometimes fall off. Generally how far out of balance it is determines when and how bad it will shake. Unfortunately this is not fixable without a tire balancing machine, has to got to a tire shop.

Were the tires rotated or replaced recently? Most major tire shops will check the balance for you at little or no charge if you take it back to the shop where the work was done.

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You need to have someone look at it that is experienced in NVH (Noise, Vibration and Harshness). Front end vibrations can be caused by many things. Each possibility needs to be systematically eliminated to find the cause. Someone who is experienced in this can eliminate several possibilities by simply driving the vehicle...Did the tire shop even bother to road test it? I'll bet not!

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