why does my 2003 buick century suddenly start to high idle

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

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

17,850

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.

120

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!

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Why won't my car get warm? 1 answer

    My 2003 Buick Century recently stopped warming up the interior when we start the car and sit and idle (even if we sit there for a long time). When we are moving for a few minutes it begins to warm t...

    2003 Buick Century Base

    -

    Maintenance & Repair

  • problem with 1990 buick century stalling out at the idle 3 answers

    We have aquired a 1990 Buick Century limited with a 3.3L engine. It started stalling out at the idle but only in the after noon. We have replaced the O2, oil pressure, water pressure and crank senso...

    1990 Buick Century Limited

    -

    Maintenance & Repair

  • 1995 Buick Century dies when I put brakes on, why? 2 answers

    My car starts, idles and runs fine until you put the brake on, idles down and just dies. What could be the cause?

    1995 Buick Century

    -

    Maintenance & Repair

  • Why is my 1990 Buick w/3.3 cutting out after filling up? 8 answers

    This just started a couple of months ago, but seems it is getting a little worse. I always fill up at 1/2 tank but now when I fill up car crank fine, takes off fine, speeds up fine, then about 2 mile...

    1990 Buick Century Custom

    -

    Maintenance & Repair

  • high idle 5 answers

    I replaced the maf, pcv, tps. Still it doesnt idle. I unplug the maf, idle kicks up to maybe 2000 rpms.....any sugestions ?

    2003 Buick Century Base

    -

    General

Search Buick Century Questions

Buick Century Experts

#1 John Saffrahn
John Saffrahn
Reputation 870
#2 Tom Demyan
Tom Demyan
Reputation 720
#3 John Pate
John Pate
Reputation 400
View All

Related Models For Sale

Used Buick LeSabre
11 Great Deals out of 2,341 listings starting at $1,795
Used Buick Regal
123 Great Deals out of 10,947 listings starting at $1,850
Used Chevrolet Impala
793 Great Deals out of 34,384 listings starting at $799
Used Buick Park Avenue
511 listings starting at $1,400
Used Honda Accord
811 Great Deals out of 81,613 listings starting at $899
Used Toyota Camry
1,091 Great Deals out of 96,268 listings starting at $1,250
Used Nissan Altima
1,087 Great Deals out of 82,558 listings starting at $670
Used Chevrolet Malibu
1,006 Great Deals out of 85,672 listings starting at $1,995
Used Ford Taurus
254 Great Deals out of 20,514 listings starting at $1,500
Used Honda Civic
667 Great Deals out of 77,417 listings starting at $1,000

Used Cars For Sale

2004 Buick Century Base For Sale
6 listings starting at $3,300