Hello GAZZUZZ, please I drive a 2006 Toyota Corolla with automatic transmission. Whenever I throttle, I notice that once I get to 60km/HR or 80km/HR my car start to rev sometimes getting to 4000/5000rpm and it won't pass that 80km/hr. Once it gets below 60km/HR again it jerks and it will start to increase speed. Sometimes it would cut off from that 80km/HR and the rpm meter will come down to Zero with the engine shutting off in the process.

Please what could be the problem