Why is your car shaking so much for the initial 10 minutes or so after starting it up?
check to see if your car has an air charge sensor which helps the computer calculate the fuel adjustment on startup when the engine is cold. Changing this sensor stopped the problem in my mercury sable.
Nope, that's what I was prescribed originally... With a 10mg Ritalin "booster." Yes 54mg of Concerta is too much for the initial dose. Over 6 years the recommended initial dose is 18mg once daily in the morning, increased if necessary in weekly steps of 18mg according to response to a maximum dose of 54mg daily. So you have been prescribed the maximum daily dose starting off. Starting on a lower strength would be more advisable…
Im not quite sure but from my experience im thinking its a miss fire in one of your pistons, It could be cause to much gasoline is entering your piston through your fuel injection system or to much moisture in the Piston... There is always the chance that you spark plug has gone and those are the easiest and cheapest fix so try that.