I have 83 RX-7 that hates the highway. I replaced the motor about 3 weeks ago and had no problems until the other day when I took it on the highway for the first time. the car started to shudder violently then died. I pulled over pumped the gas 3 times pulled the choke and it fired right up drove about 1 mile and died again. This happend 5 more times but then after getting off the highway the car drove fine. I took it home and replaced the fuel pump, fuel filter, rebuilt the carb, flushed out the fuel lines and gas tank but still the same problem. The cap rotor and wires were replaced less than 100 miles ago. If anyone has any suggestions please help Im lost. E-mail @ srellier@hotmail.com

 

I see you joined recently, I don't know much about your year. Try posting in the specific year section. You might get more useful replies.