Question about Hyundai Motor 2002 Sonata

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Car idles hard when i stop at traffic lights or slow down.. i recently had the check engine light come on and the dealer changes the egr selenoid and valve.. but problem persist and is intermittent

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THE IAC VALVE (IDLE AIR CONTROL) MAYBE DIRTY OR STICKING,TRY CLEANING THE THROTTLE BODY WHERE IAC VALVE IS. IF THAT DOES NOT WORK REPLACE IAC VALVE.

Posted on Feb 02, 2010

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Posted on Jan 02, 2017

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1 Answer

What causes engine to accelerate without gas?


Possibilities:
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If there is, or has recently been, a CHECK ENGINE light showing, have the stored codes read out. They may reveal the culprit or, at least, indicate where to begin looking.

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Try cleaning the throttle body and check the gap on all the spark plugs also all electrical sensor plugs and battery terminals this could be related to engine temperature also if to hot rpms stay up longer to cool off but maybe your idle air control valve is bad when did it start?

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I have a 2000 4 cyl. automatic Camry with 52,000. Recently, the car has developed a rough idle and it stalls. This occurs when the engine is hot and I slow the car down at a stop light or it stall as I am...


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I suggest changing your egr valve. I have a 03 impala with the same problem and check engine light came on and through the code for the egr valve. they are 154 at autozone

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