Nissan Repair: Murano Brake, lockup torque converter, occassion

Question
Dear Von, Raj again...Refer to d earlier issues I had with my Murano. The car has picked up its power and the hizzing noise is reduced to a great extent on cleaning the throttle chamber. Now a new issue, the car suddenly loose the speed when gas pedal is released while driving and rolls fast when brake pedal is released after applying the brake. This happens on all occassion.
Appreiciate your valuable advice.,regards,Raj

Answer
Raj,

Check to make sure the lockup torque converter is not sticking.  That would cause the rapid slowing after letting off the gas.  If the car rolls fast after the brake is released would mean the idle is too high and the car wants to run faster than an idle.  Email me back with what the RPM gauge reads at idle, in park.