Just a guess here, but check your turbo for end play/side play, mine will "bark" if I let off the throttle fast under a heavy load (towing) it sounds more like a grinding noise on mine, and it only does it when I down shift out of 6th gear, (climbing a hill).
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June's Cummins of the Month is now open for entries! SUMMER FUN
CP3 on its way out?
Hey all, wondering if anyone elses truck does this, when I left off the throttle and the engine is coming back down towards idle, I can hear the CP3 making a "clack clack clack" sound about 10 times around 1200-1000 rpm. Truck runs good and strong, no stuttering, just that noise when its coming back toward idle. Any ideas?
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