What would cause my 2007 Nissan Maxima to have intermittent hesitation in acceleration when it warms up? Engine replaced, ignition coils replaced, seafoam added and still problems. Drives great at first, no spitting or sputtering and once it warms up it starts hesitating. I love my Nissan, but just when I think everything is fixed, something else happens and I’ve spent over $3500 in to this vehicle since I bought it 4 years ago for $7000. Please help!

Thank you,

Doris

 

Could be a bad knock sensor. Also, try cleaning the throttle body.