1988 v6 4.3 c1500 pickup starts up great. Why does it run like crap until it warms up completely

Asked by Jan 13, 2017 at 03:24 PM about the 1988 Chevrolet C/K 1500 Cheyenne LB RWD

Question type: Maintenance & Repair

2 Answers

76,325

There is a Idle Air Control Valve that could be all plugged up or bad, you may want to take the throttle body off, pull the IACV out and clean that port along with the throttle body good. Also the Mass Air Flow Sensor should be cleaned also. If the check engine light is on should try and get the code it flashes, there may be a bad O2 sensor also.

76,325

One other thing that is the heart of the information going to the computer is the Temperature Sending Unit. It could be bad and you wouldn't even know it.

Your Answer

Chevrolet C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    3,840
  • #2
    John Saffrahn
    Reputation
    2,650
  • #3
    Rowefast
    Reputation
    2,210
View All

Related Models For Sale

Used GMC Sierra 1500
250 Great Deals out of 10,344 listings starting at $1,775
Used Ford F-150
653 Great Deals out of 10,061 listings starting at $2,995
Used Chevrolet Camaro
929 listings starting at $13,495
Used Chevrolet S-10
11 listings starting at $1,750

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.