What could cause 700 2008 super mach to be like it's in limp mode I have replaced stator ecu 4x4 actuator ignition every thing electrical besides lock in and out 4x4 switch and wiring harness and it still blinks the gas light on and will not kick in 4x4 and gets to about 4500 rpm goes limp mode while in gear or not but idles perfect and only has 357 miles on it