1500 96 4.8 eng idles fast

Asked by Mar 01, 2014 at 11:01 PM about the 1999 Chevrolet Silverado 1500 STD Standard Cab LB

Question type: Maintenance & Repair

i have replaced idle air c, manifold af, ect, cool temp senor, vss, egr, throtles position s,
does not show a code  idle speed 1300  to 1800 rpm! need help?

3 Answers

119,025

Possible vacuum leak. Have you checked your pcv? If it's stuck open could possibly cause this issue.

110,045

I agree with dandy about the vacuum leak. After you have checked for a vacuum leak you might try to reset the ECM and then drive it as normal so it can relearn.

60

Check the gasket at the base of the throttle body and try some spray intake cleaner on the butter fly in behind the air intake.

Your Answer

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 158,108 nationwide Silverado 1500 listings starting at $1,850.

ZIP:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    3,080
  • #2
    Rowefast
    Reputation
    2,200
  • #3
    Andrew Olsen
    Reputation
    1,960
View All

Related Models For Sale

Used GMC Sierra 1500
1,097 Great Deals out of 61,964 listings starting at $1,295
Used Ford F-150
2,999 Great Deals out of 231,247 listings starting at $1,300
Used Dodge Ram 1500
299 Great Deals out of 10,625 listings starting at $1,950
Used Toyota Tundra
622 Great Deals out of 36,161 listings starting at $1,500
Used Toyota Tacoma
557 Great Deals out of 41,053 listings starting at $2,995
Used Chevrolet Tahoe
801 Great Deals out of 40,247 listings starting at $1,799
Used Ford F-250 Super Duty
403 Great Deals out of 47,817 listings starting at $1,700
Used Chevrolet Camaro
371 Great Deals out of 31,504 listings starting at $3,000
Used Ford Mustang
342 Great Deals out of 41,798 listings starting at $1,488

Used Cars For Sale

2018 Chevrolet Silverado 1500 For Sale
10 Great Deals out of 85,807 listings starting at $17,963
2017 Chevrolet Silverado 1500 For Sale
227 Great Deals out of 13,935 listings starting at $16,439
2016 Chevrolet Silverado 1500 For Sale
280 Great Deals out of 7,045 listings starting at $16,644
2015 Chevrolet Silverado 1500 For Sale
443 Great Deals out of 11,344 listings starting at $12,999
2014 Chevrolet Silverado 1500 For Sale
458 Great Deals out of 10,358 listings starting at $8,950

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.