Was your hand resting on the shift lever before you noticed the problem? The first time I experienced the problem I was at a stop light in the left turn lane. I have a tendency to rest my hand on the shift lever while waiting for a light to turn. I made a U turn and once I straightened out going the opposite direction the engine rpm’s increased drastically without much increase in ground speed. At that time I shifted to neutral and back to drive and all was well.
Today while driving in town I turned at a stop light, again with my hand on the shift lever, all was well for a couple of blocks until I had to take evasive action to the right to avoid hitting a jerk who pulled into my lane without looking. Once past the vehicle I attempted to accelerate but the engine rpm’s shot up and not much in forward speed. I was going to shift to neutral again, but I was in traffic and could not look down. For some reason I pushed the shift lever to the right once or twice, things were happening to fast, and the problem was gone. In both cases I did not need to shut the engine off to reset anything.
What I believe happened in my case, and possibly others, is I accidentally moved the shift lever to the left which changes the gear you are in. Depending on how sensitive the system is the change may occur multiple times if the lever is held in that position. The lower the gear the higher the rpm’s. My actions with the shift lever may not be exact since I was hustling to avoid a more serious problem, but the bottom line is I believe I accidentally changed the gear by moving the shift lever without realizing it.
Today while driving in town I turned at a stop light, again with my hand on the shift lever, all was well for a couple of blocks until I had to take evasive action to the right to avoid hitting a jerk who pulled into my lane without looking. Once past the vehicle I attempted to accelerate but the engine rpm’s shot up and not much in forward speed. I was going to shift to neutral again, but I was in traffic and could not look down. For some reason I pushed the shift lever to the right once or twice, things were happening to fast, and the problem was gone. In both cases I did not need to shut the engine off to reset anything.
What I believe happened in my case, and possibly others, is I accidentally moved the shift lever to the left which changes the gear you are in. Depending on how sensitive the system is the change may occur multiple times if the lever is held in that position. The lower the gear the higher the rpm’s. My actions with the shift lever may not be exact since I was hustling to avoid a more serious problem, but the bottom line is I believe I accidentally changed the gear by moving the shift lever without realizing it.