Today on my way home from work my car was driving fine, despite the fact I need a new Crankshaft Position Sensor. Well as I start running into rush hour traffic I start to take off (normally) I realize the rpm's start going higher than normal (about 3k) and then it shifted. The Service Engine light started flashing (it was already on due to the CPS), flashed for about 20 seconds then stopped. Car shifted like that about twice within my 50min drive home from work. Doesn't feel like the tranny is going out, it shifts very smooth and have yet to have any issues with it. Could it be related to the CPS?