bouncing idle

I have a 91 accord ex and after my car warms up the idle bounces almost till it dies and some time it doesn't want to start after i drive for a little while could this be the t.p.s. sensor? Does anyone have any clues?

the idle bouncing may be a idle air control valve issue. but first check for any vacuum leaks...then the IAC.

about the no start issue...that sounds like the main relay.