I searched but I couldn't find an answer. I have an 06 touring. it uses a quart of oil every 1000. they rebuilt my engine in hopes of fixing this issue. they replaced the piston rings and valve guide seals. this was 3 weeks ago. the other day the rpms would get to low and the car would die. I had it towed to the dealership. it produced codes of p0011 and p0021. they replaced my vtc solenoids. I get almost home and it dies again. service engine soon light doesn't come on. of course the dealership can't duplicate it. it had always idled at about 30 psi. now it is . around 15 psi. any ideas?