[joneslb]

My 96 Riv is hesitating on take offs & has dead spots of power at various peddle levels. I took it into a shop & they advised me that my SC is inoperative at times and needs to be replaced. However the shop advised me that they couldn't guarantee that by replacing the SC would fix my problem, so needless to say I'm looking for another suggestion.

The check engine light is on, and the following codes were found: PO300, PO341, P1870, P1645, P0171.

When I step on the gas peddle hard the car takes off fine. When I'm on the freeway and shot the gas it accelerates fine, however if I try to gradually accelerate from 0-20 its running like something is bogging the car down. Also if I’m on the freeway and I try to gradually accelerate speeds it feels like something is clogged up and the car doesn't accelerate properly until I step on the gas peddle fully...

Based on the codes listed above and my brief description of the problem, can anyone help me figure out what's going on?