[insomnix]

I drive a formula v8 94 firebird with the 350
Iv had this car for 2 years now and a couple of months ago my car would go herby on me and the car would try to go without me hitting the gas. That only happened a few times. But now whenever I drive my rpms are jumping up and down whenever I drive. The car is jittering back and forth after it warms up. And when I put the car in park my rpms are up in the 3000s. I rented the reader and all I got was a bunch of low voltage codes so I replaced the alternator...that did nothing. Im stumped. Someone help!!!!