i posted a few weeks ago cause my vx started slow if the engine was still warm... and the general thought was its probably an issue with my fuel pressure regulator... havent gotten around to replacing it but today on the highway i got an engine shudder (felt like a stall, but engine didnt cut out) a check engine light and then i couldnt rev above 1500 rpms, no reponse from the gas.. so i pulled over, killed the engine, started it back up, and there was no check engine light, and i had no problems revving and no power loss, so i just drove on and had no problems after that...

would a faulty fuel pressure regulator cause that?? i hope any thoughts would be appreciated