Originally Posted By Transman
An old technician trick - get up to about 35-40 mph and throw in park for a second.
No longer.

Then take it out of park real quick.

It will make an atrocious noise but the vibration will break the governor valve and weight loose.
It won’t break parts, won’t damage anything if you do it quick.

If it doesn’t break loose then you have to pull the extension housing.

A fresh build like you say - probably got some dirt in it.


Try this first it's worked plenty of times for me.

Turbos The Only Power Adder!