Nissan Xterra Engine Low Power

I Just Changed My Alternator My Battery Gauge Hits The 18 Volt And Now My Car Won't Accelerate But The Car Stays Running.

I Have Been Experiencing A Lack Of Power For My Vehicle. Online And Offline Track Calculations Say It Should Have A 0-60 Within Around 15-20...

It Started As A Miss In The Third Cylinder. So I Replaced The Spark Plug Then I Drove It For A While. It Threw A Code For A Random Misfire...

I Just Had My Timing Belt Replaced And Now My Car Drives Like Its Stuck In Mud. It Revs Really High And There Is A Noticeable Loss Of...

My Car Wont Rev Past 2500 Rpm And Bogs If Close. Thinking Its The Cooling Temperature Sensor But Not Sure. Also Had A Bad Gas Incident But...

Car Starts And Idels Smoothly Then At 1500+ Rpm Begins To Have Engine Shake And Noise And Power Loss. Fuel Has Been Checked For Quality And...