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Originally Posted by RDCragg
Thanks for the replies.
Does the VSS = Vehicle Speed Sensor which is mounted on the top of the transmission?
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Indeed it is. VSS issues are a major source of funky shifting behavior. I had a problem with my van that caused the VSS to report only half the actual speed of the vehicle, At first I thought it only affected the speedometer but didn't take long to notice that shifting was messed up as well. If you're doing 20mph but the tranny "thinks" you're moving at 10mph it may downshift unexpectedly and you will definitely feel the slam. This also dramatically decreases fuel efficiency in city driving.
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Does the TRS = Transmission/Transaxle Range Sensor, otherwise known as the Neutral Safety Switch? If so, where is it located?
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No, I wasn't paying attention when I typed TRS, I meant to say OSS which is what some people refer to the VSS as because it is called that on certain vehicles. Sorry about that.