i replaced the air flow sensor after i had washed my engine because i can not drive with more than 2000rpm or it shuts off. i need some other suggestions of what could be the problem that i need to look into. again i have a brand new mass air flow sensor but the car still dies at 2000rpm. it is fine if its in neutral i can rev it up all the way with no problems but when i start driving that is when it fails. please help me ive only had the car for a week and i broke it due to my ignorance.