Yea, it's called "a tank slapper". Easing off of the throttle *slowly* will settle things down (and never ever hit the brakes when it's happening) but it's a hell-of-a-ride until then.
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TTFN - Guy
2018 Sprinter Campfire 29BH
2005 Ford F250 SuperDuty Crew Cab Long Bed 6.0 Diesel
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