Fluttering sound when cold
#1
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Fluttering sound when cold
Since it's gotten cold here, I have noticed a weird sound coming from what seems to be the rear of the engine or could be the auto trans or t-case. The best I can describe it is as a fluttering sound, only happens from about 2500 to 3100 RPM. It usually goes away after it's good and warm, but I notice it sometimes even after that, although it is fainter. Doesn't sound like a valve or anything to me. It does it in every gear, including neutral. I took my brother for a ride (he's a mechanic) and he wasn't sure what it was, but said not to worry about it. I drive her anywhere from 600 - 1000 plus miles a week for work, so I want to make sure everything is cool. Any ideas?
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Originally Posted by cstamm
Since it's gotten cold here, I have noticed a weird sound coming from what seems to be the rear of the engine or could be the auto trans or t-case. The best I can describe it is as a fluttering sound, only happens from about 2500 to 3100 RPM. It usually goes away after it's good and warm, but I notice it sometimes even after that, although it is fainter. Doesn't sound like a valve or anything to me. It does it in every gear, including neutral. I took my brother for a ride (he's a mechanic) and he wasn't sure what it was, but said not to worry about it. I drive her anywhere from 600 - 1000 plus miles a week for work, so I want to make sure everything is cool. Any ideas?
May be some else will pith in.
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What he said. maybe a crack in the manifold or pinhole that seals up when the material gets warm and expands, or even a bad gasket. aslo sometimes a sticky egr valve will make a similiar noise
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