My diesel engine has a check engine light on now. It's been on the last two weeks. I'm waiting on an air temp. sensor. The part checks good, but keeps tripping the check engine light. Up until the last two weeks, no problems. I also have a blank I drive screen now. I'm taking it into the dealer today for the blank screen. The radio goes up and down, the screen goes blank and then some voice comes on and asks about voice activated dialing instructions.

Craig