I have an 03 g35 coupe with 98k. I was accelerating fast on it and something after that went down. When ill be driving 40mph my rpm's get up to 4k-5k. On the navigation screen it says to make sure the gas cap is on and there is gas in the tank(I got the gas cap and gas) so I'm thinking its one of the sensors or something. I don't want to take it to a dealer cuz i know they charge up the butt. Have you guys had similar problems????
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