gutless because of the light....engine is in failure mode....meaning it is protecting itself due to a bad system reading.
Odds are, it is because you have a massive leak before the O2 sensors...or in the EGR system. Get the code number (my guess is 1131 or 1151 or both)....
"When I know more, I'll be forthcoming. Or I won't be forthcoming, and I'll be honestly deceptive." - Les Miles