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Re: RF right front is that........?
Positions are always from the perspective of the operating position, looking forward. This applies to autos, aircraft, trains, and marine vessels. In your case it can get even more confusing, since the "front" of the engine is actually toward the right side of the vehicle, and if you are standing at the front looking rearward toward the engine, everything is backward. Mentally translate the "right" and "left" to starboard and port, and everything becomes clearer.
Check the sensor cable strapped to the top of the lower control arm and its connectors. They fail almost as much as the sensors themselves. Intermittent signal caused by a broken wire in a cable or intermittent connector can cause the "excess variation" phenomenon.
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