2006 Chevrolet Cobalt car problem

2006 CHEVROLET COBALT
120,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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CODYHOLLEY1994
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  • 1 POST
We have changed the plugs, done map sensor, done full body throttle, throttle position sensor, done mass airflow, done gas pedal adjustment we just cant figure why rpm staying to low and hesitates when we take off and sometimes I got to hold the gas down a little for it to even take off to go and sometimes it will even die when I try to put it in drive
Jun 12, 2015 at 4:35 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic

First eliminate all vacuum or air leaks in the system (very important)

. You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
Jun 13, 2015 at 5:52 AM
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