Question about Buick LeSabre

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I have 1990 buick lesabre limited when i let it coast at speeds of 45-60 when it is decelerating it the car makes a jerking motion and the rpms jump down to 1200 to 1000 then back to 1200 i highly doubt that is normal any suggestions on what it would be?

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  • Buick Master
  • 5,280 Answers

It may be downshifting harshly, and that's not a good sign. Check the level and condition of your transmission fluid. It should be clear red or pink. If it is dark or has a funny smell, change the fluid and filter. That often helps an ailing transmission. It's a pretty easy, straightforward procedure for people who work on their own cars. A shop with a lift could probably do it in one hour.

Posted on Oct 15, 2013

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Posted on Jan 02, 2017

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Posted on Jul 25, 2008

Murphybanton
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SOURCE: need spark plug diagram for 1990 buick lesabre

Visit http://www.densoproducts.com

Rate this.

Posted on Sep 02, 2009

fausett39
  • 1 Answer

SOURCE: stalling, power loss, backfiring

Buy a new car!

Posted on Sep 11, 2012

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