Hope this helps someone My wife car did same thing on freezing cold day, just when i though i would have to go get her she pulled in a parking lot and floored the petal while in park (redlined it real quick) and her throttle response came back to normal. not a permanant solution but got her home. i have ordered the part if there is any tips or tricks to replacement i please post them ,, thanks brian

Did you find your problem out as mine is doing the same