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My 2009 Kia Sportage 2.0 litre engine is surging at cold start up, it revs up and down for about 30 seconds. Once in gear this stops. I took it to dealership for oil change and reported surging and was told it there was a code for emissions switch. When I took it back for the repair they were not able to duplicate the problem, so I can only assume they did not change the switch, but have not been able to get a black and white answer. It continues to surge on cold start up. I ran across a forum where others have experienced this surging but their inquiry was unanswered, curious as to your thoughts.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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emissionwiz
  • 76164 Answers

SOURCE: Car petrol engine revolution surges.

Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Nov 12, 2008

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  • 19 Answers

SOURCE: 99 hyundai accent engine surges and dies at start when cold

There a lot of cuses for this but you need to scan the vehicule before to know what sensor is having troubles, if is too much expensive the scan in your city consider to buy one. I see in ebay a lot of types of OBD2 scanners for $25-30!

Posted on Dec 24, 2008

66 chrgr
  • 1011 Answers

SOURCE: 2000 durango 5.2 cold starts, engine stalls or rpm surging

i know this may sound stupid but if your battery is old or a little weak on this vehicle the idle air control solenoid will act speradicley hunting for were it should be and the vehicle will stall.replace battery

Posted on Feb 01, 2009

dmsr63
  • 2050 Answers

SOURCE: 5.7 litre engine surging

Try to disconnect the battery negative cable, and hold it to the positive post for half a minute. This will reset your computer. Reconnect the cable and start it. It may "hunt" for a while to re-learn. This is normal. Drive it to see if there is a change.To be continued....

Posted on Jun 29, 2009

pippall
  • 1486 Answers

SOURCE: 2005 ford freestyle surges while foot on brake

Its a common fault with the fords.The air throtle idle valve needs to be replaced.Or you may call it a tapper valve.

Posted on Jul 06, 2009

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