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2006 Chevrolet Cobalt car problem

Tiny
CODYHOLLEY1994
  • MEMBER
  • 2006 CHEVROLET COBALT
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
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
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Friday, June 12th, 2015 AT 4:35 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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.
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Saturday, June 13th, 2015 AT 5:52 AM

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