engine and idle up and down when cold HELP!!

JMillerUA6

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Word, just take the cap off (when the engine is cold) and let the car run. Any bubbles in the cooling system should bleed out.

I really don't think this is your problem. But you could try it and see if it works.
 

fothermucker

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Finch has the correct answer. My 4cyl does it in the cold too.
 
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