Electric Fans, double nothing

[Pinger]

I have datalogged it. Its mostly under mid-heavy throttle to control NOX. It comes on just off-idle to mid throttle at about 2 mph and causes a noticeable hesitation on quick throttle opening. At cruising speeds it is either shut or almost shut depending on the engine load and rpm. Its also open at or very near WOT.

One more question. Is the default position of the EGR valve (ie, with electrical connector disconnected) closed?

 

[L31MaxExpress]

One more question. Is the default position of the EGR valve (ie, with electrical connector disconnected) closed?

Default is closed and the valve is held closed by a spring.