Engine Shaking and RPM Fluctuating While at Idle and Accelerating

[John Morgan]

Video of engine, hood (to show engine shaking), and dashboard – https://drive.google.com/file/d/1q9ZvvtOWUJqOflbIknqClnov0USEI4T9/view?usp=sharing

Hi all, please help me diagnose the issue with my 2011 Nissan Altima Coupe. Mileage – 148318. Was driving home and started accelerating from braking (red light changed to green) and then the engine started shaking the rest of the drive home with the RPM fluctuating +/- 1 of where it should be based on speed. Shaking lessened when slowly accelerating but constant at even speed and idle.

Maintenance History:

At 144738 miles
– Throttle body fixed (had crack), PVC hose replaced with correct hose
– Recommended but didn’t perform: Complete fuel service, Replace power steering fluid, Replace spark plugs

At 142359 miles
– Replaced battery
– Program ECM
– Replaced mass airflow sensor

At 138880 miles
– Replaced transmission

At 134949 miles
– Replaced mass airflow sensor
– Replaced angle sensor
– Replaced PVC valve and PVC hose

Topic