2010 Malibu LTZ rough idle

It can be issue with IAC( idle air control valve) causing the problem.

There are many other possibilities causing these idle issues.Engine idles rough.There are few help links with solutions to troubleshoot such idle issues.
I suggest you refer the link below and follow its troubleshooting details:------Click the link below:-----Bad miss at idle? http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
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Stumbling and stalling at idle after engine rebuild? http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

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1999 Ford F-150 Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html

--------- Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

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Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

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Cold start problem and vehicle shudder around 2500 to 3500 rpms
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html
---------- Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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GMC Sonoma Stalls and idles low http://technoanswers.blogspot.com/2012/10/gmc-sonoma-stalls-and-idles-low.html
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GMC Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

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1996 Camry intermittent engine failure while idle?

http://repairhelpcenter.blogspot.com/2011/10/1996-camry-intermittent-engine-failure.html

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Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

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Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

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High Idle Problem
http://repairhelpcenter.blogspot.com/2012/10/high-idle-problem.html
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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed?

http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

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High rpm in neutral? Inconsistant high RPM in neutral?

http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-------
Vehicle stumbling at idle and shows code 54?

http://schematicsdiagram.blogspot.in/2012/03/vehicle-stumbling-at-idle-and-shows.html

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Rough idle, staling and Erratic shifting? http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html
-----------While stop engine idles like cylinder missing? http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
---------These details will help.Thanks.

Nov 23, 2012 • 2001 Ford Escape

7helpful

1answer

1997 2.2L base Cavalier idles rough and randomly stalls

Have they checked your TPS sensor as this is the most common cause for rough idles and stalls...

Aug 21, 2009 • 1997 Chevrolet Cavalier

0helpful

2answers

'97 2.2L base Cavalier idles rough and randomly stalls

replace the map sensor it is very easy and relatively cheap

Aug 21, 2009 • 1991 Chevrolet Cavalier

Question 2

Anonymous

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Posted on Jun 11, 2013

Anonymous

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I would check the throttle body, where the fuel mixes with the air also clean all pipes/connections etc after that you should know where to go next, but give the "plate" inside where fuel and air mixes, carb

Answer 2

Anonymous

Expert 134 Answers
Posted on Jun 12, 2013

Anonymous

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Reason for rough idling may be clogged throttle body or idling screw. Set the idling screw properly. As the rough idling is intermittent, faulty spark plug may be a cause.

Answer 3 · 3/2/2009 12:00:00 AM

Anonymous

32 Answers
Posted on Mar 02, 2009

SOURCE: 98 Chevy 5.0 fast idle

try cleaning the throttle plate with the right cleaner . from a auto parts store.

Anonymous

4 Answers
Posted on Mar 15, 2009

SOURCE: 2002 chevy trailblazer has rough idle

it could be an o2 sensor. it could also just need a tune up

Anonymous

1986 Answers
Posted on Aug 21, 2009

SOURCE: 1997 2.2L base Cavalier idles rough and randomly stalls

Have they checked your TPS sensor as this is the most common cause for rough idles and stalls...

Anonymous

1 Answer
Posted on Aug 24, 2009

SOURCE: Rough idle

I had the same exact problem on my 2004 Colorado (3.5L). Cleaned the MAF sensor (with MAF sensor cleaner) and throttle body/plate - cleared it right up.

Anonymous

1509 Answers
Posted on Nov 02, 2009

SOURCE: rough idle then stalls

Vacume leak or bad idle motor. With the car in park and running with the hood open listen for leaks moving your hand around the different hoses looking for a change in the sounds that you hear. The idel motor also makes the car idel up to 1500 RPM or so right at start-up then idel down, If it doesn;t the idel motor is likly. Check engine light is on when running? Test for codes, Follow code test charts don't skip any steps!.

Testimonial: "Found the problem vacume leak like you said."

Answer 4 · 3/2/2009 12:00:00 AM

Anonymous

32 Answers
Posted on Mar 02, 2009

SOURCE: 98 Chevy 5.0 fast idle

try cleaning the throttle plate with the right cleaner . from a auto parts store.

Answer 5 · 3/15/2009 12:00:00 AM

Anonymous

4 Answers
Posted on Mar 15, 2009

SOURCE: 2002 chevy trailblazer has rough idle

it could be an o2 sensor. it could also just need a tune up

Answer 6 · 8/21/2009 12:00:00 AM

Anonymous

1986 Answers
Posted on Aug 21, 2009

SOURCE: 1997 2.2L base Cavalier idles rough and randomly stalls

Have they checked your TPS sensor as this is the most common cause for rough idles and stalls...

Answer 7 · 8/24/2009 12:00:00 AM

Anonymous

1 Answer
Posted on Aug 24, 2009

SOURCE: Rough idle

I had the same exact problem on my 2004 Colorado (3.5L). Cleaned the MAF sensor (with MAF sensor cleaner) and throttle body/plate - cleared it right up.

Answer 8 · 11/2/2009 12:00:00 AM

Anonymous

1509 Answers
Posted on Nov 02, 2009

SOURCE: rough idle then stalls

Vacume leak or bad idle motor. With the car in park and running with the hood open listen for leaks moving your hand around the different hoses looking for a change in the sounds that you hear. The idel motor also makes the car idel up to 1500 RPM or so right at start-up then idel down, If it doesn;t the idel motor is likly. Check engine light is on when running? Test for codes, Follow code test charts don't skip any steps!.

Testimonial: "Found the problem vacume leak like you said."

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