The other day, I drove the car for the longest since i put it down forthe winter. It ran fine until I put turned it off to go to the store. Afterwards, I started it up, and the engine would run smooth. The RPMs would bonce really bad, like 500 RPMs, both ways. I mean, i would be at speeds that the car would normally be 1500 RPMS, and it would bonce between 1000-2000. Then It died at wouldn't start for two hours. When it started, it ran fine. Any ideas guys?

 

How long did it sit for the winter? maybe the fuel is too old and causing problems. what about your oil? when was it changed. does it idle funny? spark plugs good? any loose? other than that i couldnt tell ya