what would cause my car to have to run for like 3-5 minutes before the idle comes up to where it should be? every time it seems like it wants to die until it runs for awhile. it doesnt matter if it is warmed up or cold, it still does the samething. i could just get done driving it, turn it off, and start it back up with having to let it run to get to normal idle all over again. any suggestions?

thank you,
Jeff

 

anyone?