Question about 1997 Buick LeSabre
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.
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Posted on Jan 02, 2017
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: 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
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
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.
Posted on Jun 21, 2009
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