My car bounces it revs from 900-1600. up and down constantly. it only happens when the car is warmed up. it doesnt happen when its cool. i think temperature sensor? any ideas?

 

Try reading in the FAQs. there is a big thread in there on this.

 

yea but in the FAQs there isnt another that has to do with temperature

 

vacuum leak...check all your vacuum hoses.spray brake clean around hoses and intake manifild gasket. the idle will drop and you will be able to figure out where the leak is. i just recently had the exact same issue, only did it when it was warmed up, ended up being intake manifold gasket. you can also try cleaning your IAC valve, this could be a possibilty

 

sounds like a vacuum leak to me,