Lack of power, turbo issue and high idle

[Cowboy642]

Hi new it this forum, here's the stats
1999 Ford E450 7.3 Powerstroke Turbo Diesel 16' cube van

The issue I'm having is lack of power. I can hear the turbo working and yet I'm lacking alot of power. It kinda sound like air escaping, I'm thinking the waste gate might be stuck

As well when I leave the truck idling, it will always overrev untill I apply the brake or press on the gas. after about ten second it will start to rev again.

appreciate the help in solving this!!!!
Hate spending my hard earned money at a garage!

 

[PTC_POWER]

Your waste gate sounds like it is working
it should only do that when it is cold, after warm up it should stop

you can disconnect the sensor on the pedestal and it will not do it at all.

not sure on the idle, are you getting any codes?

 

[howards@howard]

Down on power

My 98 PSD all of a sudden down on power found it today . The rod to the warm up valve snapped. Going to weld it open