Hello please help me my 06 300 2.7l is reading random missfire codes every other day out of no where the motor starts to shake and starts to stall I give it gas and the rpms shoot up but the car doseint go anywhere took it to the dealer they said I was crazy there was nothing wrong with the car ,then took it to a mechanic they said the crank shaft sensor was bad changed that the car ran great for about a week and now back to where I started .. Please help anyone cant go on like this anymore ....

 

is your check engine light on?
had the code read at autozone for free yet?
what codes are you recieving?
and was any work done to the car recently like right before your problem started?
random misfires...change the plugs reset computer and see if code comes back
rpms shoot up but the car doseint go anywhere....checked transmission fluid?

good luck with it