yes this happened all of a sudden, when i say limp mode i mean really low idle, but aLl i have to do is unplug the overload relay then plug it back in and all of a sudden the engine runs like a million bucks for a 2 seconds then low idle again, good battery , turns over good, i can drive if but its running half staff, I HAVE NEVER HEARD OF THIS PROBLEM SOUNDS RARE AND CHALLENGING OMG!! AND ITS MY ONLY WHEELS FOR THE FAMILY RIGHT NOW