One problem related to engine clicking and tapping noises has been reported for the 2007 Nissan Sentra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Nissan Sentra based on all problems reported for the 2007 Sentra.
Vehicle began making a ticking noise from front passenger engine area at a stop light, as I began through intersection once it turned green the car completely stalled on me as traffic began moving again in the opposite direction almost causing a collision in the middle of the intersection. There were no pre warnings, dash warning lights that came on prior to this incident. I took the vehicle to the Nissan dealer the next day (4 year old car w/ 75k miles) and was told the noise is coming from the engine I need a new motor but would not elaborate as to what exactly it was but advised me I was out of warranty and I could buy a new motor from them for 6500$. Being completely stuck in the middle of the intersection has scared me enough not to even want to get back in the vehicle so as of right now it sits in my driveway a 4 year old car with 75k miles on it that almost caused me to be tboned in an intersection and no one has any answers for me, only want money to give a new motor. Nissan corp has been contacted with out any assistance provided. I was told by Nissan not to drive the car, which I obviously wont, I have done my research and there are hundreds of complaints out there for the same exact "unknown" problem that many people have had.