why does my 2003 buick century suddenly start to high idle

Asked by foxglove Oct 16, 2014 at 07:47 PM about the 2003 Buick Century Sedan FWD

Question type: Maintenance & Repair

My 2003 buick century started to high idle. It has been driven that way for a couple of
days, There is no check engine light on and no dtcs were present when my diagnostic
machine was put on it, please help

2 Answers


Check the throttle position sensor and the throttle plate itself. Make sure the plate is clean. Also inspect the throttle linkage make sure it's not sticking, dent or dirty.

2 people found this helpful.

I also have a Buick Century. I removed my idle air control and carefully cleaned the tip. I cleaned the passage with a test tube brush and throttle body cleaner, then re-installed the idle air control. While I was at it, I cleaned the throttle body butterflies and opening. It works great now!

8 people found this helpful.

Your Answer:

Buick Century Experts

  • #1
  • #2
    John Saffrahn
  • #3
    John Pate
View All

Find great deals from top-rated dealersTM


Related Models For Sale

Used Buick LeSabre
739 listings
Used Chevrolet Impala
435 Great Deals out of 21,465 listings starting at $1,900
Used Buick Regal
88 Great Deals out of 2,364 listings starting at $3,999
Used Buick Park Avenue
180 listings starting at $1,938
Used Honda Accord
830 Great Deals out of 65,977 listings starting at $1,000
Used Ford Escape
1,610 Great Deals out of 92,619 listings starting at $1,500
Used Chevrolet Malibu
691 Great Deals out of 36,299 listings starting at $690
Used Ford Taurus
213 Great Deals out of 7,607 listings starting at $1,495
Used Toyota Camry
885 Great Deals out of 72,017 listings starting at $1,000
Used Pontiac Grand Prix
1,074 listings starting at $2,490
Used Ford Mustang
362 Great Deals out of 37,244 listings starting at $1,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.