Question about 2000 Buick LeSabre
Clean all the posts and plugs. The 3.8L engine has a common problem with intake manifold leaks.
Posted on Dec 31, 2013
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Posted on Jan 02, 2017
Best to do a fuel pressure test, pump might be weak and dosent show up until it gets gets warm. Best to do the test after it quits again when pump is at its hottest. If you havent done it yet chg. fuel filter too.
Posted on Mar 26, 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
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