I have a 93 civic hb Si. Yesterdaywhen i was driving i took off on 1st. tried to redline but the rpm only went up to 6500rpms and started jerking. also does it on 2nd to 3rd. I'm not sure what it is. At first I taught it was because it was cold but my engine was already warm. I live in NYC. yesterday temperature was @ 1 degree. Has anyone ever experienced my problem or may now what is wrong. Thanks