this was an interesting new sound. Any ideas? - Ford Powerstroke Diesel Forum
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Old 09-11-2008, 03:07 PM
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this was an interesting new sound. Any ideas?

OK. Truck was ideling last night while I was working out of the back. All of a sudden the exhaust made a strange change in tone. I normally have a normal turbo whistle coming from the exhaust. When the tone changed, it resembled the sound the truck makes apon start up. You know, before the turbo vains close. The truck has been driving normally. Any ideas to what may have happened? I dont have a code reader so I dont know if there is codes. I really hope my turbo is not failing.

Just to clarify, the change in tone was only about two seconds in duration. Than back to my normal turbo whistle. Thanks for any help you can give.
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Old 09-12-2008, 07:09 AM
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MY 03 AT IDLE HAS ACTUALLY GOT THREE DIFFRENT TONES AS I GUESS THE CALVES OPEN AND CLOSE ON EGR BUT IT SOUNDS COOL
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