Question about Suzuki Grand Vitara

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Runs rough idle

2006 grand vitara. Running great then without warning started idling rough at lights. No check engine or emission lights. Runs great when not idling. New EGR about 2 thousand miles back.

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  • Suzuki Master
  • 3,178 Answers

Your idle valve may be dirty or needs replacing would check this as it controls idle. sits on the intake with wires coming out of it.

Posted on Mar 22, 2014

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Posted on Jan 02, 2017

  • 141 Answers

SOURCE: Engine runs rough after about ten minutes /idles really low

Just trowing some suggestions out there, but, I would check the idle air control valve (solenoid) or the throttle position sensor. If they check out then my last guess would be the map sensor or the vaccuum to the map sensor. Hope I was able to help. Best wishes.

Posted on Jan 17, 2009

  • 1 Answer

SOURCE: 2003 Silverado rough idle, idles good after "check engine" light

Check your o2 sensor voltage, those trucks are real bad for o2 sensors, and yes if one sensor is reading 0mv, the others will start to drop out, and the vehicle will run very, rough. You also may check fuel system pressure, should be almost 60p.s.i. If its alot lower, Id be looking into a fuel pump. If that vehicle is drive-by-wire (no throttle cable), the throttle bodies get very dirty and cause that concern also. Id start by having the vehicle scantested.

Posted on Feb 07, 2009

  • 1 Answer

SOURCE: 2002 grand am 4 cylinder rough idle and rough running

Check the ignition control module. Sounds like the exact same problem I have had with mine. Took it to the dealership and the were able to tell me right away. The ignition control module is very easy to replace and is located on the top of the valve cover. Hope this helps!

Posted on Apr 17, 2009

  • 2 Answers

SOURCE: 1996 cavalier running rough at idle

check or change your map sensor

Posted on Dec 14, 2010

  • 6468 Answers

SOURCE: 2001 Volvo V70 2.4 T5: rough idle, check engine flashing...

when the light flashes there is a misfire taking place check the plugs and spark plug wells look for black lines down the sides of the plugs

Posted on May 15, 2012

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If your check engine light comes on get it checked. To me it sounds like an engine misfire probably cause by a coil pack or spark plug wire going bad. The misfire should cause the check engine light to come on maybe even flash if the misfire is bad enough

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It can be issue with low fuel pressure,the fuel pump is getting old both needs to be checked.Also get the IAC valve checked.
Go through the related help links with similar problem,it may help:---
Click the links below:---
Engine Idles Rough and Dies? http://whatisbyme.blogspot.in/2012/05/1994-lexus-es300-engine-idles-rough-and.html

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These details will help.
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I have a 95 Jeep Grand Cherokee 5.2L V8. Check engine light stays on, runs rough, has a fuel smell sometimes, idles low at a stop unless in park. Emission code 32 comes up. EGR? What do I do to fix this?


On the right side of your intake manifold,you will see a round mushroom looking thing with a vacuum hose running to it. You can check it by reaching under it and feel for a fairly large hole. inside the hole, there is a metal diaphragm . While the engine is idling, push up on the diaphragm and the engine should run very rough. If it doesn't, replace the EGR valve. Thats what it's called. Very easy to replace. two bolts. good luck

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It could be any number of things check your catalatic converter. Is the check motor light on? email me at mallanapril@msn.com with any other questions

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