f250 loud noise from exhaust at idle - Ford Powerstroke Diesel Forum
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Old 11-15-2010, 06:57 PM
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f250 loud noise from exhaust at idle

I looked at a f250 today. At a idle it would sound like some one turned on a fan in the exhaust then shut it back of about every 30 seconds or so. Is this normally?
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Old 11-16-2010, 03:26 AM
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No not cold out. About 75 degs here in Florida. One more thing. I started it up and let it idle about 15mins. The oil temp warm up about twice as fast at the coolant temp. Is that normal.
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Old 11-16-2010, 03:59 AM
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Probably the Turbo Vanes cycling, did it have a stock exhaust?
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Old 11-16-2010, 05:17 AM
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I don't think so. It had a cat but no muffler that I seen. The tip I think said siverline.
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Old 11-16-2010, 05:19 AM
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yea your probably hearing the turbo vanes cycling it dose that to help prevent the vanes from sticking. and that oil temp gauge is for the trans temp. and im pretty sure it is normal cause mine has done it ever since i got it and i have seen others that do it to.
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