Idles high in park?

Asked by Feb 17, 2014 at 08:39 PM about the 1999 Chevrolet Silverado 1500 Extended Cab LB 4WD

Question type: Maintenance & Repair

My 1998 chevy Silverado idles high in park. Aprox. 1500 rpms. I keep getting
throttle position sensor code and Idle air control valve. I don't understand it.
Neither did part stores. What could it be?

1 Answer

11,805

Do you know someone with a scantool that can read live values. You need to read there actual values or test the sensors in their installed postion to see if they are giving you the right output. There should be adjustments on your TPS. I would try to adjust that sensor. I believe 0.2 volts is the traget for no throttle input but don't quote me on that.

Your Answer:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    3,500
  • #2
    Rowefast
    Reputation
    2,480
  • #3
    Andrew Olsen
    Reputation
    2,280
View All

Related Models For Sale

Used GMC Sierra 1500
804 Great Deals out of 60,078 listings starting at $1,495
Used Ford F-150
2,319 Great Deals out of 198,937 listings starting at $1,300
Used Chevrolet Silverado 2500HD
362 Great Deals out of 29,388 listings starting at $2,718
Used Dodge Ram 1500
346 Great Deals out of 9,243 listings starting at $1,800
Used Toyota Tundra
452 Great Deals out of 37,795 listings starting at $1,750
Used Toyota Tacoma
429 Great Deals out of 49,110 listings starting at $2,400
Used Chevrolet Tahoe
655 Great Deals out of 38,141 listings starting at $1,199
Used Chevrolet Camaro
242 Great Deals out of 26,934 listings starting at $2,900
Used Ford F-250 Super Duty
455 Great Deals out of 37,636 listings starting at $1,999
Used Ford Mustang
297 Great Deals out of 39,759 listings starting at $1,312
Used Chevrolet Silverado 2500
121 listings starting at $5,995
Used Dodge Ram 2500
141 Great Deals out of 4,754 listings starting at $1,499

Used Cars For Sale

2019 Chevrolet Silverado 1500 For Sale
53 listings starting at $36,605
2018 Chevrolet Silverado 1500 For Sale
189 Great Deals out of 100,531 listings starting at $19,470
2017 Chevrolet Silverado 1500 For Sale
111 Great Deals out of 7,890 listings starting at $15,995
2016 Chevrolet Silverado 1500 For Sale
183 Great Deals out of 6,604 listings starting at $14,498
2015 Chevrolet Silverado 1500 For Sale
205 Great Deals out of 10,276 listings starting at $11,000

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.