Question about 2001 Buick LeSabre
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Posted on Jan 02, 2017
It's worthwile to have the car put on a diagnostic machine that checks the computer. I think I rented one of these cars, and it's a fine ride.
Posted on May 05, 2009
Sometimes a rough idle like that is a fuel filter. As you've already done the plugs and wires the fuel filter would be my next bet.
Posted on Mar 15, 2010
I have a '97 Park Avenue and had the same problem after having 4 new Bridgestone RE-910's put on by Costco. Took it to my indie tire specialist, and he rebalanced all four using his Hunter 9000 (IIRC) that does 'road force balancing'. That's what you need - Costco, and many others, use Hunter balancers but don't have the high-end models that do road force balancing. That improved things somewhat, but not enough. Turns out that 2 of the new tires themselves could not be balanced, and I ended up going through at least four more new tires from Costco before ending up with 2 more that could be balanced perfectly.
There is actually a Buick factory TSB on this very common vibration complaint with the '97 Park Avenue, and I assume it would also apply to the '98. Apparently this car is just unusually sensitive to even the slightest out-of-balance situation, and that causes the vibration. The solution in the TSB is exactly what I had already discovered: Road force balancing is essential, and you must also find four perfect tires that have zero run-out. Have your tire guy look up the TSB as proof, and then make him keep mounting new tires until he ends up with four that can be perfectly road force balanced with the Hunter.
It's frustrating, but once you get everything perfect, the car will be smooth as silk at any speed. I'm about to face the issue again, since I'm about due for another set of new tires!
Hope this helps...
Posted on Mar 28, 2010
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