Idleing rough

Asked by Dec 06, 2015 at 09:24 AM about the 1999 Chevrolet C/K 1500 LS Extended Cab 4WD

Question type: Maintenance & Repair

I have 1999 chevy silverado with 5.7. Motor runs smooth until you come to a stop.
The idle drops to barely  running and is rough. Take off and runs well. Why is it
running rough at a stop

2 Answers


Time for a tune up? Get things checked out...


A bad Intake Air Control (IAC) valve has this symptom. Wouldn't hurt to clean the throttle body and MAF sensor, clean/replace air filter.

1 of 1 people found this helpful.

Your Answer

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
  • #2
    John Saffrahn
  • #3
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,236 Great Deals out of 151,900 listings starting at $1,499
Used GMC Sierra 1500
908 Great Deals out of 59,399 listings starting at $1,980
Used Ford F-150
2,535 Great Deals out of 221,934 listings starting at $1,222
Used Chevrolet C/K 2500
200 listings starting at $3,495
Used Dodge Ram 1500
342 Great Deals out of 9,663 listings starting at $800
Used Chevrolet Tahoe
646 Great Deals out of 37,897 listings starting at $695
Used Chevrolet Camaro
257 Great Deals out of 30,437 listings starting at $4,200
Used Toyota Tacoma
452 Great Deals out of 41,046 listings starting at $2,600
Used Chevrolet C/K 3500
181 listings starting at $6,990
Used Chevrolet S-10
11 Great Deals out of 1,051 listings starting at $950

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.