What makes the motor make like a hesitation sound while its idleing?

Asked by Apr 15, 2015 at 10:05 AM about the 1991 Chevrolet C/K 1500 Silverado Extended Cab RWD

Question type: Maintenance & Repair

While my truck idles, it makes kinda like a
barely notice popping sound like a
hesitation sound and it brings my RPM's
down and the motor tries to die but it
basically revives its self and keeps doing it.
But when the motor is cold, it doesn't really
do that but it does when its warm or barely
starting to warm up.

5 Answers

45,925

Remove and clean your throttle body. Replace your Idle Air Control valve and your Engine Coolant Temp sensor.

That's all?

45,925

Is the check engine light on? If not, I would do that for starters. 90% of the time, poor idle is due to dirty throttle bodies and bad IAC valves.

Yes it comes on every other day or when its been driven off and on all day. Is it only the throttle body and IAC valves? Or is it more then that?

45,925

If your CEL is coming on, then yes, it's possibly more than that. You should bring it to Autozone and have the error codes read. You can post them back here and someone can look them up for you. You could have misfire codes or something like that.

Your Answer

C/K 1500

Looking for a Used C/K 1500 in your area?

CarGurus has 718 nationwide C/K 1500 listings starting at $2,499.

ZIP:

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    4,200
  • #2
    John Saffrahn
    Reputation
    2,720
  • #3
    Rowefast
    Reputation
    2,340
View All

Related Models For Sale

Used GMC Sierra 1500
693 Great Deals out of 58,625 listings starting at $1,995
Used Ford F-150
2,302 Great Deals out of 215,042 listings starting at $1,300
Used Chevrolet C/K 2500
190 listings starting at $3,950
Used Chevrolet Camaro
242 Great Deals out of 28,758 listings starting at $1,800
Used Chevrolet C/K 3500
180 listings starting at $4,895

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.