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2003 Chevrolet Dura...
 
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2003 Chevrolet Duramax 6.6

  

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Truck has loppy idle when weather is 45f or below I know it's cold but the idle jumps from 700 to 620 in between and trucks sounds like it isn't idling right.. what could it be scotty.. fresh oil and always use injector cleaner..


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Called temperature will often effect 2 things. Hwin you could have a bad gasket or faq you hoes that want to get cold leaks and sucks air from being more brittle. Or 2 you could have a problem with the temperature sending sensor not giving the right temperature to the computer so it can't compensate for the cold


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