Turbo or waste gate?

[GAdams]

I recently installed a new TST 230 #8 plate and the truck runs good. On a trip back from Cal yesterday I experienced the boost gauge go to 0. I was pulling a low level grade with about 3500lbs. in a trailer. The egt was about 1100-1200 and the boost was 20. About halfway up the hill the boost went to 0 and stayed there for the remainder of the trip. The truck ran good, the egt wanted to rise fairly fast and seemed to run a little hotter than usually at about 1000. When I got home I pulled the air intake off and the turbine spins free with no play. Do I have a waste gate that is stuck open or some other problem. I am assuming that the gauge is working. The gauge is westach with the egt and boost combined. Any help will be appreciated.

 

[HoleshotHolset]

I'd be willing to bet that it's either the gauge or it's tubing... . that stuff is brittle at best... and can easily shear right off if tightened too much or stressed... .



A no-boost situation would yield MUCH higher EGTs than usual and basically render the truck gutless... .



Matt

 

[Bob Wagner]

did you have an intercooler hose come loose?



Check em out, you will usually have a hose blow off during a climb



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