Loss of boost

[Mr Hagg]

Gearhead I spoke to him on the phone and it was working good at the time being. So that knocks off any air leaks. However still maybe an issue with the air tank not building air or something. I told him I fill its more like something in wiring or a ecm glitch.
I also told him the first thing I would do is take some 1/4" line and tap into his supply going to the valve for the turbo and hook up a gauge to monitor air pressure which will rule out pressure issues.

I had a truck one time with a temp sensor knocking the turbo off and turning the fan on.