On a 2000 Maxima what would cause a loss of power upon quick acceleration at any speed The RPMs drop and it does not shift into the appropriate gear when you punch the gas?

Answer 1

I have been chasing this problem for around 6 months. Last bit of information is that it appears to be a fuel pressure/delivery problem. With a maintenance scanner connected and the above situation occurs, the oxygen sensor maxes out indicating too much oxygen and insufficient gas. Recommendation is to have fuel system pressure tested. Fuel filter has been replaced with no help. Fuel pump could be suspect. I had the same problem with my 2000 Maxima. It felt like the car was sucking too much air or running out of gas under full throttle acceloration as the RPM got past about 3500. Power suffered as well. I replace the MAF mass airflow sensor and it was like I had a new car! The part is pretty easy to replace, taking about 20 minutes. The MAF in line with the air intake system. I have had the same problem with my 2000 GLE Max, sometimes the TCS/Slip came on and never go out. After searching many forums I noticed most 2000 Nissan Maximas have defective coils, I brought it to dealership and pay some money for diagnostic, they ssaid that all six coils are defected, they caused back fired. It tooks me more than 6 hours to replace the coils and voila I really enjoy my Max again. Hope this will help.