for some reason my rpms normally are at 1,000 when at idle, and sometimes now they drop all the way down to 500 on occasion, and even while im driving at a low speed and let off the gas it will drop below 1,000. this cant be good for the car, it sounds almost like it will shut off sometimes. i got a lil oil leak coming from a valve, but i dont think that has anything to do with it. the oil pressure also acts funny sometimes too. maybe the fuel injectors are clogged up, i really cant figure out what the problems are. if you have any ideas please tell me.