high rpm

My new 2017 cx5 high RPM goes to 1500 with a loud engine noise when I start the car after it has been parked overnight or not driven over 5 plus hours. It revs very high for about 5 to 10 seconds then the RMP drops and the loud engine noise goes away. Does anyone have a similar experience? It's...

I just bought a 2006 Mazda 6, 4dr sedan I manual. 5 days and 210 miles later the check engine lights goes on. Thankfully I bought it from a dealer know for good service. They replaced the LDP and the code is cleared,but now the rpm are running high. 65mph at 3, 70mph at 3.25. Before 2.5 rpm at...