When traveling at random speeds but more so around 40mph the car jerks. I have replaced the sparks and wires and fuel filter. It does seem to run better when I put high octane gas in or use sea foam. It does not feel like its the transmission. Also the car is not throwing any codes and no light on the dash is on. I checked the check engine light is working. What should I do or replace next?
I dont have my debit card with me but I do plan on making a donation. Please forgive me!