Early 99 turbo surge possible?

[Nosparkplugs]

I cant figure out what exactly is going on. When i go down hill the truck will kinda shutter and shake and like the t/c is unlocking and locking but the ses doesnt come on or the o/d light. It sounds like the turbo is spooling and slowing but feels like something in the drivetrain. i would appreciat some help thanks

[OregonStroker]

Originally Posted by Nosparkplugs

I cant figure out what exactly is going on. When i go down hill the truck will kinda shutter and shake and like the t/c is unlocking and locking but the ses doesnt come on or the o/d light. It sounds like the turbo is spooling and slowing but feels like something in the drivetrain. i would appreciat some help thanks

Do you have a sticking EBV?

[Nosparkplugs]

I doubt it its unplugged and it only does this once in a while going down hill. Could it be realted to the new tunes i got.

[superduty4x4]

Early bird turbos can surge, but this doesn't sound like a surge problem.

[Nosparkplugs]

Does it sound like the t/c?

[Nosparkplugs]

One more bump