what would make a 2004 Buick lesabre idles smooth runs rough at 4000 rpm

Asked by Jan 10, 2015 at 06:46 PM about the 2004 Buick LeSabre Custom Sedan FWD

Question type: General

startup and runs perfect until it is reved up to 4000 rpms and it won't go above 4000
above that

2 Answers


could be a faulty coil or ECM.. what does the car do at 4000? stall or change how ir runs all together? Any different noises than before?


If I am correct, this car as well as most have rev limiters to avoid possible damage to the engine. The only way to get the rpms higher than 4000 is by driving the car.

Your Answer

Buick LeSabre Experts

  • #1
    Tom Demyan
  • #2
    John Saffrahn
  • #3
    Austin Gaboda
View All

Related Models For Sale

Used Buick LaCrosse
241 Great Deals out of 12,722 listings starting at $1,800
Used Buick Park Avenue
308 listings starting at $4,499
Used Chevrolet Impala
374 Great Deals out of 27,018 listings starting at $1,000
Used Buick Regal
108 Great Deals out of 4,193 listings starting at $3,500
Used Buick Century
585 listings starting at $2,500
Used Toyota Camry
807 Great Deals out of 71,840 listings starting at $175
Used Chevrolet Malibu
608 Great Deals out of 48,695 listings starting at $1,800
Used Cadillac DeVille
1,261 listings starting at $2,699
Used Honda Accord
540 Great Deals out of 94,361 listings starting at $1,300
Used Mercury Grand Marquis
15 Great Deals out of 1,216 listings starting at $1,400
Used Chrysler 300
295 Great Deals out of 19,165 listings starting at $1,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.