My car while driving in 4th and OD would suddenly drop the gear and would only use 3rd at highway speeds (poor MPG). Until I shut off and restart the car. So I guessed it was the TPS sensor after what I have read here. I go to change my TPS sensor in my car today. First I strip the damn screws then finally getting them off. Put in a TPS my father had lying around. Now I go to drive the car. The car won't even go into Overdrive and at WOT won't exceed 4200 rpms. ^%$^*%$^%. Anyway put the old one back in and ordered a new one. Moral of the story

1. Don't use junk that’* lying around.
2. Always refer to Bonneville Club when you have a problem because you will save yourself some money aggravation

End of RANT/PRAISE

I got news for you. That was a symptom of mine as it was failing (the trans). Too much TCC slip so it disengages the TCC solonoid. Check your trans fluid bud. This doesn't sound like a TPS issue to me.

my mercury is setting a code for too much tc slip but it dosent disengage it, guess it dosent care lol

hopefully its just the tps, if the car were detecting too much tc slip wouldnt it set a code for that? or is my car just the exception here?

uH-oh (goes running to car screaming in panic)