Wrench Light

['08TowBoss]

Wrench light and reduced engine power 08 F-350 55000 miles egr, dpf delete, SCT Livewire with canned tunes. It only does it loaded in high gear. Guages always look normal and it does it no matter the tune if im heavy enough it will do it with no tune at all. If i pull over and kill the truck i can restart and goes to normal never any codes.

[08KingRanch350]

When mine did that it was the thermostats.

['08TowBoss]

Ok, thanks. Were there any other symptoms? I just can't wrap my head around it, I guess I don't know why T-stats would put the truck in reduced power and temp guage stays normal.

[08KingRanch350]

No other symptoms truck ran fine, no temp changes or any other changes took it to ford and they read the wrench code and it was thermostats. Not saying that is your problem but that was my experience.

[ZMANN]

it will cost you a Ford scan to find out unless you can find a buddy with better code reader
than your SCT i misses a lot

['08TowBoss]

Thanks guys. I should've mentioned that last time it was in for service I had them scan it . They found nothing but told me they flashed my computer and to try it on stock settings. That was fine untill I loaded my 35' GN with 13 rolls of hay and my tractor, then back to reduced power. Not to mention I had to run around for a month with no tuning. LOL

['08TowBoss]

I think ill just pull the T-stat housing and visually inspect.